an Entity references as follows:
Cristovam Ricardo Cavalcanti Buarque (Portuguese pronunciation: [kɾisˈtɔvɐ̃w̃ buˈaʁki, kɾiʃˈtɔvɐ̃w ˈbwaʁki]; born February 20, 1944) is a Brazilian university professor and member of Cidadania. He was a senator for the Federal District from 2003 to 2019.