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

Ex Input:
Sentence: 'there are five people on surf boards in the ocean'. Count the number of nouns in this sentence.

Ex Output:
4


Ex Input:
Sentence: 'Different colored plaques displayed some gold, some green'. Count the number of nouns in this sentence.

Ex Output:
2


Ex Input:
Sentence: 'A baseball player falling over an opposing player who slid into base'. Count the number of nouns in this sentence.

Ex Output:

4