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

[Q]: Sentence: 'A lean, gray racehorse being led to a track'. Count the number of nouns in this sentence.
[A]: 2


[Q]: Sentence: 'This is a black and white photo of a train sitting on the tracks'. Count the number of verbs in this sentence.
[A]: 1


[Q]: Sentence: 'A person's hand holding a phone and swiping the screen'. Count the number of nouns in this sentence.
[A]:
4