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: 'people all eating together and pretending to like each other'. How many words start with the letter 'p' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a young boy hits a baseball during a game'. How many words start with the letter 'd' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'people standing on snowboards and skis in the snow'. How many words start with the letter 'a' in the sentence.


Output: 1