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 photo of a waterway with several boats along the shore'. How many words start with the letter 'w' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a woman has just hit the tennis ball with her racket'. How many words start with the letter 't' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'the porch has lots of chairs to sit down on'. How many words start with the letter 't' in the sentence.


Output: 2