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.

Sentence: 'several boxes of glazed donuts on a desk'. How many words start with the letter 'o' in the sentence.
2

Sentence: 'this is a girl brushing her hair with a comb'. How many words start with the letter 'w' in the sentence.
1

Sentence: 'a woman skiing down a mountain in the middle of the trail'. How many words start with the letter 't' in the sentence.

3