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: 'two men on motorcycles and wearing helmets'. How many words start with the letter 'w' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a cow that is standing in the grass'. How many words start with the letter 't' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a red white green and black sign some cars and buildings'. How many words start with the letter 'c' in the sentence.


Output: 1