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

Example Input: Sentence: 'A Herd of Elephants in a body of water'. Count the number of verbs in this sentence.
Example Output: 0

Example Input: Sentence: 'A person is lying on the luggage claim conveyor belt'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'Two women sit on a sidewalk near a street with a train passing by'. Count the number of verbs in this sentence.
Example Output:
1