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

[EX Q]: Sentence: 'a desktop computers sitting on a desk next to a laptop'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 3

[EX Q]: Sentence: 'a man riding a skateboard on a bench near some trees'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 3

[EX Q]: Sentence: 'a young male skateboarder performing a trick off a half pipe'. Count the occurrences of the word 'performing' in the given sentence.
[EX A]:
1