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 man who is holding some food near his mouth'. How many words start with the letter 'f' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a man in an apron working in front of a fireplace'. How many words start with the letter 'a' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a cat is looking at his reflection in the mirror'. How many words start with the letter 'l' in the sentence.


Output: 1