Checks with https://visualqa.org/download.html:
- Num train questions: 443,757
- Num val questions: 214,354
- Num test questions: 447,793

- Num train answers: 4,437,570
- Num val answers: 2,143,540

-  Num train images: 82,783
- Num val images: 40,504
- Num test images: 81,434

testdev is not mentionned:
- Num questions: 107,394
- Num images: 36,807
region:us
{}
TAGS
#region-us 

Checks with URL
- Num train questions: 443,757
- Num val questions: 214,354
- Num test questions: 447,793

- Num train answers: 4,437,570
- Num val answers: 2,143,540

-  Num train images: 82,783
- Num val images: 40,504
- Num test images: 81,434

testdev is not mentionned:
- Num questions: 107,394
- Num images: 36,807
TAGS
#region-us 

passage: TAGS
#region-us 
