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

[Q]: Sentence: 'a fudge brownie with chocolate chips sits near a threeprong fork'. Count the occurrences of the word 'a' in the given sentence.
[A]: 2


[Q]: Sentence: 'a train is moving on a railroad track through a city'. Count the occurrences of the word 'a' in the given sentence.
[A]: 3


[Q]: Sentence: 'a red stop sign sitting next to a street sign'. Count the occurrences of the word 'sign' in the given sentence.
[A]:
2