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 rusty metal park bench in a park'. How many words start with the letter 'a' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'dude in shades sits and eats a hotdog'. How many words start with the letter 's' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'and man and a woman standing together talking'. How many words start with the letter 'a' in the sentence.


Output: 3