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 riding on top of a wave on a surfboard'. How many words start with the letter 'o' in the sentence.

Answer: 3


Question: Sentence: 'several boxes of glazed donuts on a desk'. How many words start with the letter 'o' in the sentence.

Answer: 2


Question: Sentence: 'a small dog is playing with a blue frisbee'. How many words start with the letter 'd' in the sentence.

Answer:
1