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 boat in a canal and a peddled bike taxi cart in snow with residences'. How many words start with the letter 'a' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'parking meter with nine minutes left and red car'. How many words start with the letter 'c' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'an image of a train that has graffiti painted on it'. How many words start with the letter 'o' in the sentence.


Output: 2