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

Ex Input:
Sentence: 'A boy tucks his knees to complete a jump on his skate board'. Count the number of nouns in this sentence.

Ex Output:
5


Ex Input:
Sentence: 'There's a toilet in a bathroom with a mirror behind it'. Count the number of verbs in this sentence.

Ex Output:
0


Ex Input:
Sentence: 'River with ducks swimming in it surrounded by leafless trees and brown grass'. Count the number of nouns in this sentence.

Ex Output:

4