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.

[Q]: Sentence: 'a man cuts into food being cooked on a grill'. How many words start with the letter 'o' in the sentence.
[A]: 1


[Q]: Sentence: 'a man and three children playing with a kite on the grass and other people riding bikes on a nearby road'. How many words start with the letter 'a' in the sentence.
[A]: 5


[Q]: Sentence: 'a cat lying on a desk with computers'. How many words start with the letter 'a' in the sentence.
[A]:
2