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 prepares to swing at a pitch'. How many words start with the letter 'a' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a plate with potato pancakes and a fork'. How many words start with the letter 'p' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a wood bench next to a tree outside'. How many words start with the letter 't' in the sentence.


Output: 2