The system has three modes, only one of which requires the driver to push a button.
Cancer is like a door with three locks, each of which requires a different key.
In Professor Mortensen's paper, companies offer jobs, each of which requires a certain amount of skill.
Ms. Green's nightmare, the telling of which requires prompting: "Someone was being chased, I couldn't stop something from happening".
This is being fought on at least three fronts, each of which requires a somewhat different strategy.
Among the difficulties, military experts say, are decoy tunnels and false entrances, the identification of which requires good intelligence.
All of which requires a combination of balance and timing as much as the ability to pull on almost non-existent holds.
"The transcript reflects neither false statements nor perjury, each of which requires proof of a willfully false statement about a material matter," Ms. Reno said.
Indeed, the really big deal is the iPhone 2.0 software and the App Store, neither of which requires buying a new iPhone.
We should join Barthes in his vindication of literature and the arts, the study of which requires a deceleration, a dismissal of the necessity to produce, produce, produce.
Next, I left the newsroom for a home office where I write books and magazine articles, neither of which requires daily sprints toward deadline.
