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: 'the baseball catcher walks towards the pitching mound'. How many words start with the letter 't' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a blue and white sign attached to a building'. How many words start with the letter 'a' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a man on a surfboard with a stuffed animal riding a wave'. How many words start with the letter 'a' in the sentence.


Output: 5