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 young man in a suit looks down and adjusts his tie'. How many words start with the letter 'a' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a passenger train that is passing under some blue bars'. How many words start with the letter 'u' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a man that has a tennis racket by a court'. How many words start with the letter 'h' in the sentence.


Output: 1