premise: This story goes back a number of years to when a company from Nova Scotia, related by the way to the leader of the NDP, the L.E. Shaw group of companies, a very reputable company I might add, proposed doing a similar type of business, a quarrying business on the banks of the Saint Croix River in the Bayside Ports area.
hypothesis: This story goes back more than 4 years ago
reason: We don't know how many years ago it goes back, just several years which could mean anything