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


question:
Sentence: 'two giraffes are walking down a rocky path'. How many words start with the letter 'a' in the sentence.
answer:
2


question:
Sentence: 'a group of snow enthusiasts at a resort'. How many words start with the letter 'a' in the sentence.
answer:

3