Since the 1996 flood-and I make no apologies for bringing this up again-everyone has become aware of the necessity to preserve the valuable heritage of the few remaining houses surrounding the little white house in the old section of Chicoutimi, known as ``le bassin'', which everyone wants to preserve.
There has been at least one incident of flooding in the past 30 years 
( z1 flood :quant ( z2 at-least :op 1 ) :time ( z3 before :op ( z4 now ) :duration ( z5 temporal-quantity :quant 30 :unit ( z6 year ) ) ) )