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: 'the two women were sitting on a blanket beside the river'. How many words start with the letter 't' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'there is a group of people with horses and a wagon'. How many words start with the letter 'a' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a person wearing a white tennis outfit and holding a tennis racket on a tennis court'. How many words start with the letter 'a' in the sentence.


Output: 5