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.

[EX Q]: Sentence: 'people on a tour bus with half the top cut off'. How many words start with the letter 'b' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'the passengers are going up the step in to the plane'. How many words start with the letter 't' in the sentence.
[EX A]: 4

[EX Q]: Sentence: 'a closeup shot of a white wii remote'. How many words start with the letter 'w' in the sentence.
[EX A]:
2