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: 'a man sitting at a cafeteria table with his laptop and looking at his cell phone'. How many words start with the letter 'h' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a dog and a cat lay on a bed with a window near by'. How many words start with the letter 'b' in the sentence.


Output: 2