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: 'group of zebras and gazelles grazing on the grass'. How many words start with the letter 'g' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a bedroom area with bed two dressers and a window'. How many words start with the letter 'w' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a man holding a colorful kite above his head'. How many words start with the letter 'a' in the sentence.


Output: 3