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

Ex Input:
Sentence: 'A walking sign glows underneath two street signs'. Count the number of verbs in this sentence.

Ex Output:
2

Ex Input:
Sentence: 'A photo of young children playing base ball turned the wrong way'. Count the number of nouns in this sentence.

Ex Output:
5

Ex Input:
Sentence: 'Several people looking at books and magazines at an outdoor zine library'. Count the number of verbs in this sentence.

Ex Output:
1