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

Ex Input:
Sentence: 'A person wipes out on their surfboard in the ocean'. Count the number of nouns in this sentence.

Ex Output:
3


Ex Input:
Sentence: 'a group of people on surf board ride on some snow'. Count the number of nouns in this sentence.

Ex Output:
5


Ex Input:
Sentence: 'A little kid tossing a yellow frisbee in a park'. Count the number of nouns in this sentence.

Ex Output:

3