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

Example Input: Sentence: 'A oil tanker train on the tracker with mountains in the background'. Count the number of verbs in this sentence.
Example Output: 0

Example Input: Sentence: 'A man and children are riding on the back of an elephant'. Count the number of nouns in this sentence.
Example Output: 4

Example Input: Sentence: 'A red and blue kite is flying high'. Count the number of verbs in this sentence.
Example Output:
1