Context: The National Disaster Relief Commission initiated a "Level II emergency contingency plan", which covers the most serious class of natural disasters. The plan rose to Level I at 22:15 CST, May 12.

Question: What did the National Disaster Relief Commission initiate?
Answer: Level II emergency contingency plan

Question: What does a Level II emergency contingency plan cover?
Answer: the most serious class of natural disasters

Question: When did the plan rise to Level I?
Answer: at 22:15 CST, May 12

Question: What level alert was instated for the quake?
Answer: Level II emergency

Question: What class of disasters is a level II emergency?
Answer: most serious

Question: What level was the disaster set at 22:15 CST, May 12?
Answer: Level II

Question: What department initiated the emergency contingency plan?
Answer: National Disaster Relief Commission