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: 'ostrich in enclosed area next to a giraffe'. How many words start with the letter 't' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a brown and white cat laying on blanket on door of open oven'. How many words start with the letter 'o' in the sentence.

Output: 5


Input: Consider Input: Sentence: 'a man and a dog are hauling a bbq grill via motorcycle'. How many words start with the letter 'v' in the sentence.


Output: 1