Task: Question Answering
Input (English): To simulate the scenario, we split the Microsoft COCO dataset into food and non-food domain datasets. the food dataset has 3,806 images for training and 1,775 for validation. The non-food dataset has 78,976 images for training and 38,749 for validation. Adaptation to food domain captioning 
 Question: How many examples are there in the source domain?
Output (English): 78,976