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

Example Input: Sentence: 'A boy doing a trick with a skateboard on a ramp'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A woman on skis coming down a slope'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'It is an image of an outside space'. Count the number of verbs in this sentence.
Example Output:
0