sentences:  Fernando Agüero was the conservative presidential candidate of the 1966 National Opposition Union (UNO) against the Somoza regime.In a UNO political rally in support of the candidacy of Agüero in Managua on January 22, 1967, the National Guard killed hundreds of oppositors.Four years later, in 1971, Agüero signed the "Kupia-Kumi (Miskitu; translates as "One Heart") Pact" with Somoza whereby the Conservatives had their congressional quota increased to 40 per cent, a constituent assembly was established, and a triumvirate composed of Agüero and two Somocistas designated to rule until the end of 1974.