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: 'on one plate there is glazed donut and on the other plate there is mug of hot chocolate with a leaf shape swirled in it'. How many words start with the letter 's' in the sentence.
[A]: 2


[Q]: Sentence: 'a kitchen with a sink and a dish rack'. How many words start with the letter 'a' in the sentence.
[A]:
4