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 laying on top of a white toilet seat near a sink'. How many words start with the letter 'a' in the sentence.
answer:
3


question:
Sentence: 'a person doing a trick in the water'. How many words start with the letter 'i' in the sentence.
answer:
1


question:
Sentence: 'some guys playing a video game on a big screen'. How many words start with the letter 'b' in the sentence.
answer:

1