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 man in a wheel chair holding a tennis racquet'. How many words start with the letter 't' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'several white boats are anchored at a marina'. How many words start with the letter 's' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'guys throwing a frisbee together and leaping in the air '. How many words start with the letter 't' in the sentence.


Output: 3