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

Q: Sentence: 'a man standing on top of a skateboard on top of cement'. Count the occurrences of the word 'a' 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 man hitting a tennis ball on a tennis court'. Count the occurrences of the word 'a' in the given sentence.

A:
3
****