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 photograph of a vase through its glass showcase'. How many words start with the letter 'i' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a pizza is shown on a plate with veggies on top'. How many words start with the letter 'o' in the sentence.


Output: 2