Update README.md

README.md

@@ -10,7 +10,7 @@ language:
 - zh
 - ar
 - es
-license: cc-by-2.0
+license: cc-by-4.0
 size_categories:
 - 100K<n<1M
 task_categories:
@@ -101,7 +101,7 @@ English caption is retrieved from the original [COCO dataset repository](http://
 
 ## Thai `th`
 
-Thai captions is a part of Romrawin Chumpu’s work at NECTEC. This work is partially supported by the Program Management Unit for Human Resources & Institutional Development, Research and Innovation (PMU-B) [Grant number B04G640107]. The captions are translated from English to Thai using machine translation. 
+Thai captions were a part of Romrawin Chumpu’s work at NECTEC. This work is partially supported by the Program Management Unit for Human Resources & Institutional Development, Research and Innovation (PMU-B) [Grant number B04G640107]. The captions are translated from English to Thai using machine translation. 
 
 ## Russian `ru`
 
@@ -113,7 +113,7 @@ The captions are translated by using `facebook/wmt19-en-ru` model.
 
 Source: [STAIR Captions](https://stair-lab-cit.github.io/STAIR-captions-web/)
 
-The captions are translated from English to Japanese using machine translation. 
+The captions were translated from English to Japanese using machine translation. 
 
 ```
 @InProceedings{Yoshikawa2017,
@@ -138,13 +138,13 @@ Total captions of this Japanese version is around 26k captions.
 
 Source: [crux82/mscoco-it: A large scale dataset for Image Captioning in Italian](https://github.com/crux82/mscoco-it)
 
-The captions is obtained through semi-automatic translation from English to Italian. 
+The captions were obtained through semi-automatic translation from English to Italian. 
 
 ## German `de`
 
 Source: [Jotschi/coco-karpathy-opus-de · Datasets at Hugging Face](https://huggingface.co/datasets/Jotschi/coco-karpathy-opus-de)
 
-The captions are translated by using [Helsinki-NLP/opus-mt-en-de · Hugging Face](https://huggingface.co/Helsinki-NLP/opus-mt-en-de) model. 
+The captions were translated by using [Helsinki-NLP/opus-mt-en-de · Hugging Face](https://huggingface.co/Helsinki-NLP/opus-mt-en-de) model. 
 
 ## Vietnamese `vi`
 
@@ -172,10 +172,10 @@ We selected only human generated dataset.
 
 Source: [canesee-project/Arabic-COCO: MS COCO captions in Arabic](https://github.com/canesee-project/Arabic-COCO)
 
-The captions are fully translated with Google's Advanced Cloud Translation API.
+The captions were fully translated with Google's Advanced Cloud Translation API.
 
 ## Spanish `es`
 
 Source: [carlosGarciaHe/MS-COCO-ES: MS-COCO-ES is a dataset created from the original MS-COCO dataset. This project aims to provide a small subset of the original image captions translated into Spanish by humans annotators. This subset is composed by 20,000 captions of 4,000 images.](https://github.com/carlosGarciaHe/MS-COCO-ES)
 
-The captions are translated by human.
+The captions were translated by human.