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 woman is on the court playing a game of tennis'. How many words start with the letter 'i' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a person takes a picture of a reflection in a mirror in the dark'. How many words start with the letter 'p' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a table with three slices of pizza with various toppings on them'. How many words start with the letter 's' in the sentence.


Output: 1