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 Input:
Sentence: 'a young woman is posing on a wooden table'. How many words start with the letter 'w' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a man standing next to a car talking on the phone'. How many words start with the letter 't' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'people and a bicyclist watching a plane fly overhead'. How many words start with the letter 'p' in the sentence.

Ex Output:

2