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 man with a tennis rack on a court'. How many words start with the letter 'a' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a person on a court with a tennis racket'. How many words start with the letter 'p' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'two people holding umbrellas in front of a building'. How many words start with the letter 'h' in the sentence.


Output: 1