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 striped bus travels down a city street at night'. How many words start with the letter 'a' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a huge stainless steel cooking range with a hood in a salesroom'. How many words start with the letter 's' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a dog suspended in mid air catching a frisbee'. How many words start with the letter 'c' in the sentence.


Output: 1