Context: I went to my grandparent 's house for supper last night . It was my grandmother 's 92nd birthday . I was happy to find that the leaves had started to change and fall in her neighborhood , so I got some pictures .

Question: why was he happy about the leaves falling ?
Options:
0. he enjoyed the fact that the plants were no longer growing and living
1. he enjoyed the way the leaves looked when they had fallen
2. he does n't like plants that are alive
3. he enjoys taking pictures of plants while alive more than when dead
Answer: 1

Question: why did the leaves start falling ?
Options:
0. because it was likely the fall season
1. because it was the birthday of his family member
2. because it was raining
3. None of the above choices .
Answer: 0