In this task, you need to count the occurrences of the given word in the given sentence.
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Question: Sentence: 'a dog is sleeping in a bed underneath a desk'. Count the occurrences of the word 'a' in the given sentence.

Answer: 3

Question: Sentence: 'a person showing a selfie of themself to the camera'. Count the occurrences of the word 'a' in the given sentence.

Answer: 2

Question: Sentence: 'there is a sandwich on a cutting board'. Count the occurrences of the word 'on' in the given sentence.

Answer:
1