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: 'green plants growing in a garden on the ground'. How many words start with the letter 'g' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'the colorful fruit is laid out in boxes'. How many words start with the letter 'i' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a pole with two traffic signs on it in the daytime'. How many words start with the letter 't' in the sentence.

Ex Output:

3