Add parquet file description

README.md

@@ -39,9 +39,15 @@ The sentences included in the dataset are in Catalan (CA) and Chinese (ZH).
 
 Two separate txt files are provided with the sentences sorted in the same order:
 
-- ca-zh_all_2023_10_26.ca: contains 6.833.114 Catalan sentences.
+- ca-zh_all_2023_10_26.ca.
+
+- ca-zh_all_2023_10_26.zh.
+
+The dataset is additionally provided in parquet format: ca-zh_all_2023_10_26.parquet.
+
+The parquet file contains two columns of parallel text obtained from the two original text files. 
+Each row in the file represents a pair of parallel sentences in the two languages of the dataset.
 
-- ca-zh_all_2023_10_26.zh: contains 6.833.114 Chinese sentences.
 
 ### Data Fields
 
@@ -63,7 +69,7 @@ This dataset is aimed at promoting the development of Machine Translation betwee
 
 #### Initial Data Collection and Normalization
 
-The first portion of the corpus is a combination of the following original datasets collected from [Opus](https://opus.nlpl.eu/):
+The first portion of the corpus is a combination of the following original Catalan-Chinese datasets collected from [Opus](https://opus.nlpl.eu/):
 WikiMatrix, XLENT, GNOME, OpenSubtitles.
 
 Additionally, the corpus contains synthetic parallel data generated from the following original Spanish-Chinese datasets collected from [Opus](https://opus.nlpl.eu/):