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 woman walking a large brown dog next to a tennis ball'. Count the occurrences of the word 'a' in the given sentence.
[A]: 3


[Q]: Sentence: 'giraffe with front legs spread looking at water'. Count the occurrences of the word 'legs' in the given sentence.
[A]:
1