Update instructions about version in dataset card

README.md

@@ -252,17 +252,36 @@ dataset_info:
 
 ### Dataset Summary
 
-BIGPATENT, consisting of 1.3 million records of U.S. patent documents along with human written abstractive summaries. Each US patent application is filed under a Cooperative Patent Classification (CPC) code. There are nine such classification categories:
-
-- A (Human Necessities)
-- B (Performing Operations; Transporting)
-- C (Chemistry; Metallurgy)
-- D (Textiles; Paper)
-- E (Fixed Constructions)
-- F (Mechanical Engineering; Lightning; Heating; Weapons; Blasting)
-- G (Physics)
-- H (Electricity)
-- Y (General tagging of new or cross-sectional technology)
+BIGPATENT, consisting of 1.3 million records of U.S. patent documents along with human written abstractive summaries.
+Each US patent application is filed under a Cooperative Patent Classification (CPC) code.
+There are nine such classification categories:
+- a: Human Necessities
+- b: Performing Operations; Transporting
+- c: Chemistry; Metallurgy
+- d: Textiles; Paper
+- e: Fixed Constructions
+- f: Mechanical Engineering; Lightning; Heating; Weapons; Blasting
+- g: Physics
+- h: Electricity
+- y: General tagging of new or cross-sectional technology
+
+Current defaults are 2.1.2 version (fix update to cased raw strings) and 'all' CPC codes:
+```python
+from datasets import load_dataset
+
+ds = load_dataset("big_patent")  # default is 'all' CPC codes
+ds = load_dataset("big_patent", "all")  # the same as above
+ds = load_dataset("big_patent", "a")  # only 'a' CPC codes
+ds = load_dataset("big_patent", codes=["a", "b"])
+```
+
+To use 1.0.0 version (lower cased tokenized words), pass both parameters `codes` and `version`:
+```python
+ds = load_dataset("big_patent", codes="all", version="1.0.0")
+ds = load_dataset("big_patent", codes="a", version="1.0.0")
+ds = load_dataset("big_patent", codes=["a", "b"], version="1.0.0")
+```
+
 
 ### Supported Tasks and Leaderboards
 
@@ -277,6 +296,12 @@ English
 ### Data Instances
 
 Each instance contains a pair of `description` and `abstract`. `description` is extracted from the Description section of the Patent while `abstract` is extracted from the Abstract section.
+```
+{
+  'description': 'FIELD OF THE INVENTION  \n       [0001]     This invention relates to novel calcium phosphate-coated implantable medical devices and processes of making same. The unique calcium-phosphate coated implantable medical devices minimize...',
+  'abstract': 'This invention relates to novel calcium phosphate-coated implantable medical devices...'
+}
+```
 
 ### Data Fields