31.   They owe their existence to some of the rules of quantum mechanics.

32.   This is where steamboating was born, and many towns along the way owe their existence to steamboats.

33.   Union Pacific Resources Group Inc., owes its existence to a law signed by Abraham Lincoln.

34.   The current government in Maseru owes its existence to Mandela.

35.   Those are powerful words from a company that owes its existence to Palmer and now is so closely associated with Woods.

36.   Today, we owe the existence of the Internet to this revolutionary protocol.

37.   The potential collapse of more regional banks is threatening many small and medium-sized businesses, which owe their existence to their localin members.

38.   Many Sinhalese language movies owe their existence to government efforts to protect the local film industry, but are often a poor imitation of hugely popular Hindi films.