With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ruth Negga is a television actress who has appeared in Criminal Justice, Love/Hate, Misfits, and more.
text_B: A Night at the Chinese Opera is an opera in three acts by Judith Weir , who also wrote the libretto .. opera. opera. Judith Weir. Judith Weir. Aside from an earlier opera for children , this was Weir 's first full-scale opera , written on commission from the BBC for performance by Kent Opera .. opera. opera. BBC. BBC. Kent Opera. Kent Opera. Weir incorporated an early Chinese play of the Yuan dynasty , The Orphan of Zhao , as the centrepiece of Act 2 of her opera .. opera. opera. Yuan dynasty. Yuan dynasty. The Orphan of Zhao. The Orphan of Zhao. The work received its premiere on 8 July 1987 at the Everyman Theatre , Cheltenham , England .. Everyman Theatre. Everyman Theatre, Cheltenham. The Opera magazine critic noted that `` few new operas have recently made so diverting a first impression as A Night at the Chinese Opera , partly on its intrinsic musico-drmatic merits , partly through the style of production '' .. The outer acts are fully scored for the chamber orchestra in ` closed-forms ' such as area , sextet , seven-part motet but the Yuan play is mostly scored for flute , lower strings and percussion .
not_related.