We can't see underlining here, but here, I think this will be helpful:
"I read a novel" would be the intependent clause: it does not need the other one to be complete.
"until the guests arrived" is the subordinate clause: it needs the independent, main clause to be complete.
1. The company buoyed up their prices on shoes.
2. The contentious feud resulted a 24 hour curfew.
3. According to the nutrition facts, Cornflakes, contains no added sugar or additives.
