If the days are long periods of time then logic insists that the nights be long periods as well.
(the days; are; long periods of time) (logic; insists; that the nights be long periods as well; T:then) Context(logic insists,List([42, 55))):(the nights; be as well; long periods)
logic insists,List([42, 55))
the days logic the nights
are insists be as well
long periods of time
that the nights be long periods as well T:then
long periods