Sentence:Before he leaves Ephesus, however, a [e1]riot[/e1] breaks out, instigated by the [e2]silversmiths[/e2] who manufacture idols of the goddess Artemis; they are afraid that Paul's evangelistic success will ruin their business.
 e1: riot. 
 e2 : silversmiths.
Answer: Cause-Effect(e2,e1)