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

[Q]: Sentence: 'a jumbo jet airplane carrying a space shuttle in the air'. Count the occurrences of the word 'a' in the given sentence.
[A]: 2


[Q]: Sentence: 'a bear standing on top a piece of pipe with a chain attached'. Count the occurrences of the word 'a' in the given sentence.
[A]: 3


[Q]: Sentence: 'cows are on the road that people are trying to drive on'. Count the occurrences of the word 'are' in the given sentence.
[A]:
2