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 man cuts into food being cooked on a grill'. How many words start with the letter 'o' in the sentence.
answer:
1


question:
Sentence: 'the inside of a toilet stall on an airplane'. How many words start with the letter 'a' in the sentence.
answer:
3


question:
Sentence: 'a cover box of a frozen pizza'. How many words start with the letter 'b' in the sentence.
answer:

1