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 picture of a mirror on a bike'. How many words start with the letter 'o' in the sentence.
[A]: 2


[Q]: Sentence: 'a man skiing down a mountain on a sunny day'. How many words start with the letter 'm' in the sentence.
[A]: 2


[Q]: Sentence: 'a lady surfer is riding a wave while others surf behind her'. How many words start with the letter 'h' in the sentence.
[A]:
1