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: 'two adults and a child fly a kite at the beach'. How many words start with the letter 'a' in the sentence.

Output: 5


Input: Consider Input: Sentence: 'a small bathroom has a mirror vanity and toilet'. How many words start with the letter 'b' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'an airplane with a man standing on top'. How many words start with the letter 't' in the sentence.


Output: 1