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: 'Two cows that are standing in the grass'. Count the number of nouns in this sentence.
Example Output: 2

Example Input: Sentence: 'A man who is holding a small laptop and smiling'. Count the number of verbs in this sentence.
Example Output:
2