I am currently performing retrieval task on MS-COCO dataset, and I am using the default val2014 zip file defined in the repo, which has 40504 images in total. However, when the dataset is created, the size of it is 5k points. I believe this is due to the annotations file, which might currently point to the 2017 released version, given that the validation split is 5k. Also, val2014 is downloaded by default, even if the split points to test split. Could you please confirm if those claims are valid?