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 woman is holding some cupcakes with candles and a kitchen and a baby in a chair'. How many words start with the letter 'k' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a passenger train that is passing under some blue bars'. How many words start with the letter 'u' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a display in a grocery store filled with lots of produce'. How many words start with the letter 'g' in the sentence.

Ex Output:

1