diff --git a/README.md b/README.md
index bf4e5c2..a09e685 100644
--- a/README.md
+++ b/README.md
@@ -81,14 +81,14 @@ If everything goes fine, you should see:
    d8'
 _________________________________________________________
 
-usage: ya2ro [-h] (-i YALM_PATH | -l YA2RO_PREV_OUTPUT) [-o OUTPUT_DIR] [-p PROPERTIES_FILE] [-ns]
+usage: ya2ro [-h] (-i YAML_PATH | -l YA2RO_PREV_OUTPUT) [-o OUTPUT_DIR] [-p PROPERTIES_FILE] [-ns]
 
 Human and machine readable input as a yaml file and create RO-Object in jsonld and/or HTML view. Run 'ya2ro -configure GITHUB_PERSONAL_ACCESS_TOKEN' this the first time to configure ya2ro
 properly
 
 options:
   -h, --help            show this help message and exit
-  -i YALM_PATH, --input YALM_PATH
+  -i YAML_PATH, --input YAML_PATH
                         Path of the required yaml input. Follow the documentation or the example given to see the structure of the file.
   -l YA2RO_PREV_OUTPUT, --landing_page YA2RO_PREV_OUTPUT
                         Path of a previous output folder using the ya2ro tool. This flag will make a landing page to make all the resources accessible.
@@ -104,19 +104,19 @@ options:
 
 ### How to use  
 
-The first thing to do is create some input for ya2ro. To create valid a yalm you should follow the documentation bellow.
+The first thing to do is create some input for ya2ro. To create valid a yaml you should follow the documentation bellow.
 
-Create a yalm from scratch or use one of the supplied templates. Currently ya2ro supports two formats:
+Create a yaml from scratch or use one of the supplied templates. Currently ya2ro supports two formats:
 
 * paper
 * project
 
 Please find a template for each type under the directory templates.
-Once you have a valid yalm (proyect or paper) is time to run ya2ro.
+Once you have a valid yaml (project or paper) is time to run ya2ro.
 
 #### Create machine and human readable content
 
-It is possible to process batches of yalms at the same time, to do that just specify as input a folder with all the yalms inside.
+It is possible to process batches of yamls at the same time, to do that just specify as input a folder with all the yamls inside.
 
 ##### Simple execution
 
diff --git a/Yaml Examples/EELISA - Green Planet Projects/ya2ro.yaml b/Yaml Examples/EELISA - Green Planet Projects/ya2ro.yaml
index 9fcb5e0..50ef26e 100644
--- a/Yaml Examples/EELISA - Green Planet Projects/ya2ro.yaml	
+++ b/Yaml Examples/EELISA - Green Planet Projects/ya2ro.yaml	
@@ -16,7 +16,7 @@ demo:
   -
     name: "Demo Green Planet Projects"
     link: https://oeg-upm.github.io/ya2ro/output/landing_page.html
-    description: "This is an output example using the 'Green Planet Projects' yalms as input and it is hosted on GitHub Pages."
+    description: "This is an output example using the 'Green Planet Projects' yamls as input and it is hosted on GitHub Pages."
 
 software: 
   - 
diff --git a/output/agricultural_practices/ro-crate.json b/output/agricultural_practices/ro-crate.json
index dd058ab..193954b 100644
--- a/output/agricultural_practices/ro-crate.json
+++ b/output/agricultural_practices/ro-crate.json
@@ -44,7 +44,6 @@
         {
             "@id": "https://orcid.org/0000-0003-0212-3381",
             "@type": "Person",
-            "description": null,
             "name": "MARGARITA RUIZ RAMOS",
             "position": [
                 "Universidad Polit\u00e9cnica de Madrid - Technical University of Madrid"
@@ -91,14 +90,12 @@
                 {
                     "@type": "Demo",
                     "description": "Anonymous interview transcript.",
-                    "link": "https://drive.google.com/drive/folders/1xKIWHDgsBjiRalMb5BM-pDHEbslLYJpr",
-                    "name": null
+                    "link": "https://drive.google.com/drive/folders/1xKIWHDgsBjiRalMb5BM-pDHEbslLYJpr"
                 },
                 {
                     "@type": "Demo",
                     "description": "Interview questions.",
-                    "link": "https://drive.google.com/drive/folders/1I_KPjAKJ1zKPWqj2VVWj4uRLOxH2DCLk",
-                    "name": null
+                    "link": "https://drive.google.com/drive/folders/1I_KPjAKJ1zKPWqj2VVWj4uRLOxH2DCLk"
                 }
             ]
         },
diff --git a/src/ya2ro/ro_jsonld.py b/src/ya2ro/ro_jsonld.py
index 4025bfd..bd6275e 100644
--- a/src/ya2ro/ro_jsonld.py
+++ b/src/ya2ro/ro_jsonld.py
@@ -1,4 +1,3 @@
-from pandas import notnull
 from . import properties as p
 import json
 
diff --git a/src/ya2ro/ya2ro.py b/src/ya2ro/ya2ro.py
index 9f8916b..492c01c 100644
--- a/src/ya2ro/ya2ro.py
+++ b/src/ya2ro/ya2ro.py
@@ -33,7 +33,7 @@ def main():
     group = parser.add_mutually_exclusive_group(required=True)
 
     # Required positional argument 
-    group.add_argument('-i','--input', type=str, metavar='YALM_PATH',
+    group.add_argument('-i','--input', type=str, metavar='YAML_PATH',
         help='Path of the required yaml input. Follow the documentation or the example given to see the structure of the file.')
 
     # Required positional argument