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

[EX Q]: Sentence: 'a girl in a bathing suit with a pink umbrella'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 3

[EX Q]: Sentence: 'a person flying a kite on a busy city street'. Count the occurrences of the word 'on' in the given sentence.
[EX A]: 1

[EX Q]: Sentence: 'a person and a bike on a city street'. Count the occurrences of the word 'a' in the given sentence.
[EX A]:
3