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

Example Input: Sentence: 'A military airplane is sitting on the runway'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'Yellow utility truck parked inside a warehouse by itself'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A stop sign posted in a very sandy area'. Count the number of verbs in this sentence.
Example Output:
1