41.   Of course, the cocktail shaker would not exist without the increased popularity of the mixed drinks that spurred its creation.

42.   On Earth, the ecosystems that exist without sunlight are in the blackness of the deep sea.

43.   One cannot exist without the other.

44.   On Earth, the ecosystems that exist without sunight are in the blackness of the deep sea.

45.   Others say he cannot exist without such attention.

46.   Paul Marantz and Jules Fisher, the lighting designers, deserve equal credit for rejuvenating spaces that could not exist without incandescence.

47.   Q. How long do you think you can exist without producing profit?

48.   Put bluntly, the Serb Republic could not exist without control of Brcko.

49.   Since its inception, Internet communication has existed without clear legal guidelines.

50.   Some seemed befuddled as to how the orchestra could exist without an authoritarian artistic leader.