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

Example Input: Sentence: 'A vintage photo of a man in a bowler hat feeding a zebra'. Count the number of nouns in this sentence.
Example Output: 5

Example Input: Sentence: 'A group of people walking towards an airplane'. Count the number of nouns in this sentence.
Example Output: 3

Example Input: Sentence: 'A train riding through a city neighborhood'. Count the number of verbs in this sentence.
Example Output:
1