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

Example Input: Sentence: 'Buses in a third-world country are colorfully decorated'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A woman looking in the window of a brick store front'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A horse eating hay in a open yard'. Count the number of verbs in this sentence.
Example Output:
1