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

Input: Consider Input: Sentence: 'People are boarding and departing a train at a station'. Count the number of verbs in this sentence.

Output: 2


Input: Consider Input: Sentence: 'A collection of headshots dot the picture frame'. Count the number of nouns in this sentence.

Output: 4


Input: Consider Input: Sentence: 'A group of zebras standing in a field with trees in the background'. Count the number of verbs in this sentence.


Output: 1