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

[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 man standing on some rocks holding a surfboard'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 2

[EX Q]: Sentence: 'a room with a television a desk and some chairs'. Count the occurrences of the word 'a' in the given sentence.
[EX A]:
3