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: 'colorful flowers in a metal vase sitting on a mirror ledge'. How many words start with the letter 'c' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a person on a court with a tennis racket'. How many words start with the letter 'p' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a little kid that is eating some food'. How many words start with the letter 'f' in the sentence.

Ex Output:

1