In this task, you need to count the occurrences of the given word in the given sentence.
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Question: Sentence: 'a man is surfing in a river while another person watches'. Count the occurrences of the word 'a' in the given sentence.

Answer: 2

Question: Sentence: 'a very large cow that is in a field'. Count the occurrences of the word 'large' in the given sentence.

Answer: 1

Question: Sentence: 'a man snowboarding down a hill during a snowstorm'. Count the occurrences of the word 'down' in the given sentence.

Answer:
1