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 beverage and some food are sitting on a wooden table'. How many words start with the letter 's' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a woman sitting on some stairs by a ball and backpack'. How many words start with the letter 'b' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a southwest jet is seen on the runway'. How many words start with the letter 't' in the sentence.


Output: 1