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 desk with a cross on it and candles'. How many words start with the letter 'w' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a small bathroom has a mirror vanity and toilet'. How many words start with the letter 'b' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'military men with us army uniforms serving food onto trays'. How many words start with the letter 'u' in the sentence.

Ex Output:

2