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 green place mat sitting on a table with a couple of plates of food and a drink placed upon it'. How many words start with the letter 'p' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'two uncooked pizzas sit on a wooden table'. How many words start with the letter 't' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a crowd of people standing in line next to a buidling'. How many words start with the letter 'i' in the sentence.


Output: 1