Complex sentence: The clear and logical structure of Nagai's plays makes it naturalistic The characters are caught in some predicament and the motor for the play's theatricality is how the characters are liberated from the predicament.
Split into simpler sentences: The clear and logical structure of her plays makes it naturalistic, where the characters are caught in some predicament. The motive of the play's theatricality is how the characters are liberated from the predicament.