Based on this selection, which of the following statements best describes an aspect of the poem’s structure?

133 With Ocean, Ra´ma’s interview;
134 The bridge that Nala o’er it threw.
135 The crossing, and the sitting down
136 At night round Lanka´’s royal town.
137 The treaty with Vibhi´shan made:
138 The plan for Ra´vana’s slaughter laid.
139 How Kumbhakarna in his pride
140 And Meghana´da fought and died.
141 How Ra´vana in the fight was slain,
142 And captive Si´ta´ brought again.
143 Vibhi´shan set upon the throne;
144 The flying chariot Pushpak shown.
145 How Brahma´ and the Gods appeared,
146 And Si´ta´’s doubted honour cleared.