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 open fridge that has different items inside of it'. How many words start with the letter 'i' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'two packaged frozen pizzas that are on a cookie sheet and the boxes behind the pizzas'. How many words start with the letter 't' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'the elephant is eating the pile of food'. How many words start with the letter 'i' in the sentence.

Ex Output:

1


