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

[Q]: Sentence: 'an employee at a canon store stands in front of a case of canon merchandise'. Count the occurrences of the word 'of' in the given sentence.
[A]: 2


[Q]: Sentence: 'a pink toothbrush and a blue toothbrush sitting in a clear glass toothbrush holder by a mirror'. Count the occurrences of the word 'toothbrush' in the given sentence.
[A]: 3


[Q]: Sentence: 'a young boy stands with a bat before a t ball setup'. Count the occurrences of the word 'a' in the given sentence.
[A]:
3