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

Input: Consider Input: Sentence: 'A mp3 player sitting on top of a speaker system'. Count the number of nouns in this sentence.

Output: 5


Input: Consider Input: Sentence: 'A couple of horses standing in the middle of a road'. Count the number of nouns in this sentence.

Output: 4


Input: Consider Input: Sentence: 'A little boy is getting into a refrigerator'. Count the number of verbs in this sentence.


Output: 1