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 cat is laying on a keyboard in front of double monitors'. How many words start with the letter 'm' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a man on a bike and a banana in the pocket'. How many words start with the letter 'a' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'three people gathered in the snow on their skis'. How many words start with the letter 't' in the sentence.

Ex Output:

3