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 photograph of a vase through its glass showcase'. How many words start with the letter 'i' in the sentence.
answer:
1


question:
Sentence: 'a group of young people riding snow boards down a snow covered hillside'. How many words start with the letter 'a' in the sentence.
answer:
2


question:
Sentence: 'an array of screens are sitting in a semi circle on a desk'. How many words start with the letter 'o' in the sentence.
answer:

2