These factors allowed rabbit numbers to increase again to plague proportions in several areas, and the opportunity to keep rabbit numbers low was lost.
(the opportunity to keep rabbit numbers low; was lost; ) (These factors; allowed; rabbit numbers to increase again to plague proportions in several areas) Context(These factors allowed,List([0, 21))):(rabbit numbers; to increase; T:again; to plague proportions in several areas)
These factors allowed,List([0, 21))
the opportunity to keep rabbit numbers low These factors rabbit numbers
was lost allowed to increase
rabbit numbers to increase again to plague proportions in several areas
T:again to plague proportions in several areas