In this task, you need to count the number of words in a sentence that start with the given letter. Answer with numbers and not words.
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Question: Sentence: 'a man and boy blow out a candle on a birthday cake'. How many words start with the letter 'a' in the sentence.

Answer: 4


Question: Sentence: 'two men are riding horses on a beach'. How many words start with the letter 'r' in the sentence.

Answer: 1


Question: Sentence: 'a man cuts into food being cooked on a grill'. How many words start with the letter 'o' in the sentence.

Answer:
1