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: 'there is a man playing in a game of tennis'. How many words start with the letter 'i' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a bowl of noodles is pictured on a table with eating utensils'. How many words start with the letter 'p' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a person skiing by another on a big snowy hill'. How many words start with the letter 'a' in the sentence.


Output: 3