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 traffic light showing green signalstreet sign board is there'. How many words start with the letter 't' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a man serves the ball during a claycourt tennis match'. How many words start with the letter 'm' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a cat that is sitting next to a computer'. How many words start with the letter 't' in the sentence.

Ex Output:

2