Task: Question Answering
Input (English): Context: So I took Mom out to dinner for Mother 's Day tonight ( since I 'll be busy tomorrow with Sam coming back from New Brunswick ) , after finally managing to get her to choose what sort of food she actually wanted to eat . We went to the Fish Market in Byward , somewhere I 'd always wanted to try , and it turned out rather well all told . I liked my blackened Cajun swordfish , and it was very generously seasonedThe Market in general was bustling , even more than I expected for a Saturday night in May. I guess this winter gave the entire city an acute case of cabin fever . 
Question: Why did they take their mom out to eat ?
Output (English): It was Mother 's Day and they wanted to treat her .