What is the effect of the metaphor in these lines from a poem? Your mind and you are our Sargasso Sea, London has swept about you this score years And bright ships left you this or that in fee: Ideas, old gossip, oddments of all things, Strange spars of knowledge and dimmed wares of price. (from "Portrait d'Une Femme" by Ezra Pound) It creates a mysterious impression of the subject. It creates a straightforward impression of the subject. It creates a plaintive tone. It creates an exultant tone.