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 beautiful young lady eating a candy apple on an amusement park ride'. How many words start with the letter 'a' in the sentence.

Output: 5


Input: Consider Input: Sentence: 'a green fire hydrant is in the middle of an open dirt hole in a construction area'. How many words start with the letter 'a' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'an open menu and bottles of wine sit on a restaurant table'. How many words start with the letter 'o' in the sentence.


Output: 3