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

Ex Input:
Sentence: 'A tennis player is trying to hit the ball'. Count the number of nouns in this sentence.

Ex Output:
3


Ex Input:
Sentence: 'A person on a skateboard reads while riding'. Count the number of verbs in this sentence.

Ex Output:
2


Ex Input:
Sentence: 'A man brushing his teeth with a tooth brush'. Count the number of nouns in this sentence.

Ex Output:

4