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 plate topped with steaks broccoli and carrots'. How many words start with the letter 'a' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a man standing over a sheet cake on top of a table'. How many words start with the letter 's' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'the cell phone is in front of a computer monitor'. How many words start with the letter 'c' in the sentence.

Ex Output:

2