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

Example Input: Sentence: 'a blender near a stove with an open flame'. Count the number of verbs in this sentence.
Example Output: 0

Example Input: Sentence: 'toilet in small space with blue and white tile'. Count the number of nouns in this sentence.
Example Output: 3

Example Input: Sentence: 'One zebra following another into a rock cave'. Count the number of verbs in this sentence.
Example Output:
1