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

Example Input: Sentence: 'A backyard with tables, shade trees, and a stepping stone path'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A young teenager in glasses smiles while brushing her teeth'. Count the number of nouns in this sentence.
Example Output: 4

Example Input: Sentence: 'A tilted angle of a group of zebras on a dry plain'. Count the number of verbs in this sentence.
Example Output:
0