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 wearing a beret while using a laptop computer'. How many words start with the letter 'u' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a bus and two cars are going down a two way street'. How many words start with the letter 't' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a little girl on a tennis court getting ready to hit the ball'. How many words start with the letter 'l' in the sentence.

Ex Output:

1