In this task, you need to count the number of nouns/verbs in the given sentence.

Ex Input:
Sentence: 'The stuffed bears are covered in flakes of fake snow'. Count the number of verbs in this sentence.

Ex Output:
2

Ex Input:
Sentence: 'a messy room with clothes and a computer'. Count the number of nouns in this sentence.

Ex Output:
3

Ex Input:
Sentence: 'there is a black cat that is walking through a grass field'. Count the number of nouns in this sentence.

Ex Output:
3