31.   Solicitors also participate in social activities likely to get them and their firms known to potential clients.

32.   Surrounded by the most dour cast of characters known to man, Paul Merton suddenly seems excessively articulate, intelligent and well-read.

33.   That Clenbuterol, the stimulating steroid that got three Brits sent home, is known to its devotees as Dopers Delight.

34.   The bill would have banned an abortion procedure known to health professionals as intact dilation and extraction.

35.   The computer itself could only be activated by an access code known solely to Bailey.

36.   The door had not been forced open, which strongly suggests that the victim was known to her killer.

37.   The effect is unexpected, and no theoretical basis is known to the author - hence the empirical treatment.

38.   The effects of diarrhoeal disease can be conquered with one of the simplest and cheapest natural remedies known to science.

39.   The instincts are known to us as impulses, wishes or desires which seek direct satisfaction, unless they are totally repressed.

40.   The most threatening form of pollution known to humankind is poverty.