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

[EX Q]: Sentence: 'a lady that is at a sink in a kitchen'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 3

[EX Q]: Sentence: 'a man in a green shirt has a baseball bat'. Count the occurrences of the word 'in' in the given sentence.
[EX A]: 1

[EX Q]: Sentence: 'two skiers race up a hill while people look on'. Count the occurrences of the word 'people' in the given sentence.
[EX A]:
1