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

[EX Q]: Sentence: 'a person in pajamas reading on a bed'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 2

[EX Q]: Sentence: 'a man on a flat truck is behind a large group of farm animals'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 3

[EX Q]: Sentence: 'a jet flying with a smaller jet attached to the top of it'. Count the occurrences of the word 'jet' in the given sentence.
[EX A]:
2