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: 'two pizzas sitting on top of a pan on a counter'. How many words start with the letter 'p' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'hospital display of different bed setups and a nurses uniform'. How many words start with the letter 'd' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a homemade pizza with uneven borders sitting on a giant wooden spatula'. How many words start with the letter 'a' in the sentence.

Ex Output:

2