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

[EX Q]: Sentence: 'lots of colorful watercraft parked at a large body of water'. Count the occurrences of the word 'of' in the given sentence.
[EX A]: 2

[EX Q]: Sentence: 'a man with two tennis balls and a racket on a tennis court'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 3

[EX Q]: Sentence: 'a young man that is waiting to hit a served tennis ball'. Count the occurrences of the word 'is' in the given sentence.
[EX A]:
1