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: 'this is a dish of buttered asparagus with dressing'. How many words start with the letter 'o' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a guy squatting down and tapping his food with a woman sitting down'. How many words start with the letter 'f' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a small table with jars ans a clock on the wall above'. How many words start with the letter 'a' in the sentence.


Output: 4