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 msall bus going down a road with a street sign'. How many words start with the letter 'd' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a picture of a mirror on a bike'. How many words start with the letter 'o' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'the sausage is on the kitchen counter with broccoli and rice'. How many words start with the letter 't' in the sentence.


Output: 2