Quatrain, couplet, octave, or sestet?
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Answer:
The first excerpt is an octave and the second is a sestet.
Explanation:
An octave is composed of eight lines, and a sestet has six. Counting the lines, the poem "Nothing Gold Can Stay" by Robert Frost has eight, thus being an octave, and the excerpt from "Hero and Leander" by Christopher Marlowe has six lines, meaning that is a sestet.