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: 'green plants growing in a garden on the ground'. How many words start with the letter 'g' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a crowd of people on the street one of which is taking pictures with a cell phone'. How many words start with the letter 'o' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a fire hydrant on the side of a street'. How many words start with the letter 'h' in the sentence.


Output: 1