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 train moves across a train crossing in a city'. How many words start with the letter 'c' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'this is a girl brushing her hair with a comb'. How many words start with the letter 'w' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'two women sitting a a table eating food'. How many words start with the letter 'e' in the sentence.


Output: 1