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

Ex Input:
Sentence: 'a tennis player getting ready to hit a ball on a tennis court'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3

Ex Input:
Sentence: 'a tv sitting on a patch of grass next to a pole'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3

Ex Input:
Sentence: 'extreme closeup of meet and cheese pizza and cutting wheel'. Count the occurrences of the word 'and' in the given sentence.

Ex Output:
2