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: 'on one plate there is glazed donut and on the other plate there is mug of hot chocolate with a leaf shape swirled in it'. How many words start with the letter 's' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'an orange and white scooter carrying two passengers drives down a wet street while the passenger of the scooter holds a purple umbrella'. How many words start with the letter 'a' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a footlong hotdog in a wrapper held in a hand'. How many words start with the letter 'w' in the sentence.


Output: 1