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.

Input: Consider Input: Sentence: 'people walking down the street while some people ride their bicycles'. How many words start with the letter 'w' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a man on a cell phone next to a woman'. How many words start with the letter 'n' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a mauve colored toilet bowl on the sidewalk'. How many words start with the letter 'c' in the sentence.


Output: 1