Before joining the Brooklyn Dodgers in 1947, which athlete lettered in four sports at UCLA?

Before its sighting in 1846, which eighth planet's existence was deduced from its gravitational pull on another planet? Before its completion in 1917, the Quebec Bridge collapsed twice during construction. Which river does it cross? Before Joe Montana played for the Kansas City Chiefs, which team did he lead to four Super Bowl titles? Before John Speke named it in 1858, which African lake was known to Arab traders as Ukerewe? Before ending his career with the Los Angeles Lakers, Karl Malone spent 18 seasons with which team? Which biblical strongman tied torches to the tails of 300 foxes and killed 1,000 Philistines with a donkey's jawbone? Before Lou Reed's song, "A Walk on the Wild Side" was the title of a 1956 novel by which author? Before Michael Jordan played for the Washington Wizards, which team did he lead to six NBA titles?