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 terrier in a black and light brown far next to each other'. How many words start with the letter 'b' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a man holding up a smart phone with both hands'. How many words start with the letter 'm' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'fruits and vegetables are on display on a table draped with a red and gold covering'. How many words start with the letter 'a' in the sentence.

Ex Output:

5