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 girl in a soccer outfit is throwing a soccer ball'. How many words start with the letter 'g' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a man using a laptop computer on a table'. How many words start with the letter 'a' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'an aircraft sitting stationary on a horizontal road'. How many words start with the letter 'a' in the sentence.


Output: 3