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 traffic light with a red light and an arrow pointing to the right'. How many words start with the letter 't' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'railway train passenger cars with graffiti parked on a gravel lot'. How many words start with the letter 'l' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'two doughnuts sit on a plate with drinks surrounding'. How many words start with the letter 's' in the sentence.


Output: 2