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 soccer player running and kicking a soccer ball during a match'. How many words start with the letter 'a' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a train passes over a quiet city park on a bridge'. How many words start with the letter 'a' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a dining table displaying many plates of assorted food'. How many words start with the letter 'a' in the sentence.


Output: 2