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 view of kitchen missing everything except the microwave and top cabinets'. How many words start with the letter 'e' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a bunch of tables in a hanger with an airplane overhead'. How many words start with the letter 'a' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'a dog sleeping on a blue blanket next to a news paper'. How many words start with the letter 'n' in the sentence.

Ex Output:

2