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 zeppelin flying in the air as a water spouts occurs in a city lake'. How many words start with the letter 'a' in the sentence.
answer:
5


question:
Sentence: 'a cat is laying on a keyboard in front of double monitors'. How many words start with the letter 'm' in the sentence.
answer:
1


question:
Sentence: 'a passenger train marred with graffiti pauses at a station'. How many words start with the letter 'a' in the sentence.
answer:

3