41.   The world of art continues to make its presence known on the World Wide Web.

42.   There are few plays where Tampa Bay defensive lineman Warren Sapp does not make his presence known.

43.   They made their presence known on that first night.

44.   To blunt the competition, Boeing is making its presence known throughout China, offering assistance in flight safety programs, airport expansion and management training.

45.   Vannatter said that all their door-knocking and bell-ringing made their presence known.

46.   With the playoffs set to start this week, he is sure to make his presence known throughout the country to baseball fans everywhere.

47.   Rebel leader Subcomandante Marcos also made his presence known Monday for the first time since the crackdown.

48.   Although improved security measures have eased the problem since, the hooligans have continued to make their presence known.

49.   And they sure do make their presence known.

50.   As a contributor to the modernist dialogue, he also made his presence known in other areas, from translation to political satire.