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 room filled with a stove and surrounded by cabinets'. How many words start with the letter 'w' in the sentence.
[A]: 1


[Q]: Sentence: 'some unfinished looking wood is in a white bathroom'. How many words start with the letter 'w' in the sentence.
[A]: 2


[Q]: Sentence: 'man posing against a white wall with a gun holster on his hip'. How many words start with the letter 'a' in the sentence.
[A]:
3