instruction:
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.
question:
Sentence: 'a man without a shirt riding a skateboard'. How many words start with the letter 'r' in the sentence.
answer:
1


question:
Sentence: 'the man is standing on a surfboard with a paddle'. How many words start with the letter 's' in the sentence.
answer:
2


question:
Sentence: 'people on a tour bus with half the top cut off'. How many words start with the letter 'b' in the sentence.
answer:

1