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

Answer: 1


Question: Sentence: 'dusty train passing through a dry mountain valley'. How many words start with the letter 'd' in the sentence.

Answer: 2


Question: Sentence: 'a first prize sign next to a little cake with white frosting and some cherries on top'. How many words start with the letter 'o' in the sentence.

Answer:
1