Sentence:Boslough and colleagues achieved fame more than a decade ago by accurately predicting that that the [e1]fireball[/e1] caused by the [e2]intersection[/e2] of the comet Shoemaker-Levy 9 with Jupiter is observable from Earth.
 e1: fireball. 
 e2 : intersection.
Answer: Cause-Effect(e2,e1)