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 bowl of noodles is pictured on a table with eating utensils'. How many words start with the letter 'p' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a woman is standing in the kitchen using her phone'. How many words start with the letter 'w' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a young man reads a book in bed'. How many words start with the letter 'b' in the sentence.

Ex Output:

2