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 baseball player holding a glove in one hand and ball in the other'. How many words start with the letter 'a' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'an electric train stands on the train tracks'. How many words start with the letter 't' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a room with a couch and a tv monitor'. How many words start with the letter 'm' in the sentence.


Output: 1