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

[Q]: Sentence: 'a man with a neck tie is wearing a motorcycle helmet'. Count the occurrences of the word 'wearing' in the given sentence.
[A]: 1


[Q]: Sentence: 'a man riding skis down a snow covered slope'. Count the occurrences of the word 'snow' in the given sentence.
[A]: 1


[Q]: Sentence: 'a small train engine pulling a freight car'. Count the occurrences of the word 'a' in the given sentence.
[A]:
2