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 young man in a suit looks down and adjusts his tie'. How many words start with the letter 'a' in the sentence.
answer:
4


question:
Sentence: 'a train moves across a train crossing in a city'. How many words start with the letter 'c' in the sentence.
answer:
2


question:
Sentence: 'a shiny silver water pipe sticking out of the sidewalk'. How many words start with the letter 'a' in the sentence.
answer:

1