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: 'a person walking on a city street with a luggage bag'. How many words start with the letter 'w' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a large group of men with bats in a dugout'. How many words start with the letter 'g' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'five giraffes meandering along in their outdoor habitat'. How many words start with the letter 'f' in the sentence.


Output: 1