Sentence:The [e1]spill[/e1] was caused by the Iraqi fuel [e2]tanker[/e2] Zainab, suspected of smuggling around 1,300 tonnes of fuel oil from Iraq, as it ran into trouble on its way to a holding area in international waters.
 e1: spill. 
 e2 : tanker.
Answer: Cause-Effect(e2,e1)