In this task, you need to count the occurrences of the given word in the given sentence.

[EX Q]: Sentence: 'a person is skate skiing and some plants and trees'. Count the occurrences of the word 'and' in the given sentence.
[EX A]: 2

[EX Q]: Sentence: 'a gray bird about to perch on a branch'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 2

[EX Q]: Sentence: 'a small bird perched on a branch in a tree'. Count the occurrences of the word 'a' in the given sentence.
[EX A]:
3