Sentence:  Astronomers discovered nine small moons lying outside the orbit of Oberon (Francisco, Caliban, Stephano, Trinculo, Sycorax, <WSD>Margaret</WSD>, Prospero, Setebos, and Ferdinand) between 1997 and 2003. 
Meaning of the word marked with <WSD> tags:  A moon of Uranus, named for a character in "Much Ado About Nothing". (Discovered 2003)