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 on a surfboard in the midst of an ocean wave'. How many words start with the letter 'o' in the sentence.

Answer: 3


Question: Sentence: 'a train traveling through a tunnel on a model track'. How many words start with the letter 'a' in the sentence.

Answer: 3


Question: Sentence: 'a person that is sitting down on some rocks'. How many words start with the letter 's' in the sentence.

Answer:
2