21.   The musicians seek innovation in a tradition nearly half a century old.

22.   The long, wooden downstairs bar is more than a century old.

23.   The newcomer is the Listerine Pocket Pak, a new take on the mouthwash brand that is more than a century old.

24.   The Peabody is an elegant place, more than a century old.

25.   The poster in the antique shop was more than a century old.

26.   The silvery zinc roof, by then a century old, began to leak.

27.   They studied halls more than a century old, and others open only a few years.

28.   Other buildings in the complex also are well over a century old.

29.   People can legally import ivory only if they hunted the elephant legally or if the ivory can be proven to be more than a century old.

30.   But American experts described the main navigation system, available to pilots at Dubrovnik as half a century old.