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.

Ex Input:
Sentence: 'a group of people eating a meal outside'. How many words start with the letter 'g' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'decorative objects on a counter in front of a framed picture'. How many words start with the letter 'o' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a person on a bench with a laptop and other people walking down the road'. How many words start with the letter 'a' in the sentence.

Ex Output:

4