What was Cher's first solo U.S. No.1 hit single?

Gypsys, Tramps & Thieves

What tree climbed by Zacchaeus to better view Jesus? Which character do players first control in the original 'Donkey Kong' arcade game? Who was the first men's singles tennis player to achieve a career Grand Slam? Which abstract strategy game from Africa involves capturing and sowing seeds along fields carved into wood? Which island nation is located directly south of Italy's mainland?