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

[Q]: Sentence: 'a group of people on surf board ride on some snow'. Count the number of nouns in this sentence.
[A]: 5


[Q]: Sentence: 'A person doing tricks on a skateboard about to fall'. Count the number of nouns in this sentence.
[A]: 3


[Q]: Sentence: 'there is a air bed on the floor on a balcony'. Count the number of nouns in this sentence.
[A]:
4