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

Example Input: Sentence: 'People walking across an intersection in the city'. Count the number of nouns in this sentence.
Example Output: 3

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: 'Two people preparing to go skiing in the snow'. Count the number of verbs in this sentence.
Example Output:
3