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 vine of bananas sit on a tree'. How many words start with the letter 'b' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a man on a cell phone next to a woman'. How many words start with the letter 'n' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a man and woman with a couple of refrigerators taped to themselves'. How many words start with the letter 't' in the sentence.


Output: 3