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 man sitting at a cafeteria table with his laptop and looking at his cell phone'. How many words start with the letter 'h' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a bathroom has an overhead shower wand above the tub'. How many words start with the letter 't' in the sentence.

Ex Output:
2


Ex Input:
Sentence: '2 baby calves drinking milk from a bottle'. How many words start with the letter 'f' in the sentence.

Ex Output:

1