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: 'the man is laying in bed taking his temperature'. How many words start with the letter 'i' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a boy wearing blue has a skateboard in the air near a black railing'. How many words start with the letter 'a' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a cat sitting on a pan in an oven'. How many words start with the letter 'a' in the sentence.


Output: 3