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 catching a frisbee on a baseball field while its owner watches'. Count the occurrences of the word 'a' in the given sentence.

Answer: 3

Question: Sentence: 'a young boy barefoot holding an umbrella touching the horn of a cow'. Count the occurrences of the word 'touching' in the given sentence.

Answer: 1

Question: Sentence: 'a girl using a mobile device sits on the lap of a man in a military uniform'. Count the occurrences of the word 'a' in the given sentence.

Answer:
4