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 group of people eating a meal outside'. How many words start with the letter 'g' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a person is sitting in the grass on a motorcycle'. How many words start with the letter 'i' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'the double image shows a woman swinging a tennis racket'. How many words start with the letter 't' in the sentence.

Ex Output:

2