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 giraffe and two small hogs stand in an enclosure'. How many words start with the letter 's' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'the perspective of the photo makes it seem as if the refrigerator is being held in a hand'. How many words start with the letter 'p' in the sentence.


Output: 2