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 road with a crosswalk in the middle of it'. How many words start with the letter 't' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a bath tub sink and window located in a bathroom'. How many words start with the letter 'a' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a man on horseback leading a group of horses in front of a large crowd'. How many words start with the letter 'o' in the sentence.


Output: 3