In this task, you need to count the occurrences of the given word in the given sentence.
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Question: Sentence: 'a horse out in a grassy green field'. Count the occurrences of the word 'a' in the given sentence.

Answer: 2


Question: Sentence: 'a cat with a purple and red collar sitting in a bowl'. Count the occurrences of the word 'a' in the given sentence.

Answer: 3


Question: Sentence: 'a person watching television showing a big bird on the screen'. Count the occurrences of the word 'screen' in the given sentence.

Answer:
1