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

Example Input: Sentence: 'Two people walk down an city sidewalk carrying umbrellas'. Count the number of verbs in this sentence.
Example Output: 2

Example Input: Sentence: 'A picture of a dog staring down a fire hydrant'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A sheep standing in a  grass pasture that is fenced'. Count the number of nouns in this sentence.
Example Output:
3