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

Ex Input:
Sentence: 'Old man in a white outfit swinging at a tennis ball with a racket'. Count the number of nouns in this sentence.

Ex Output:
5


Ex Input:
Sentence: 'Two zebras out in the wild in the grass'. Count the number of nouns in this sentence.

Ex Output:
3


Ex Input:
Sentence: 'Two women walking down a street holding an umbrella'. Count the number of nouns in this sentence.

Ex Output:

3