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

Example Input: Sentence: 'There is a line of blue umbrellas on a beach'. Count the number of verbs in this sentence.
Example Output: 0

Example Input: Sentence: 'Store front on an old narrow city street with cars on it'. Count the number of verbs in this sentence.
Example Output: 0

Example Input: Sentence: 'Three horses grazing in a snow covered field'. Count the number of nouns in this sentence.
Example Output:
3