premise: A man and woman sit on a dock looking out over the water on an overcast day.
hypothesis: It is a beautiful blue, cloudless day at the dock.
explanation_1: In overcast days there will be clouds covering a major part of the sky
explanation_2: The day cannot be overcast and cloudless at the same time.
explanation_3: The day cannot be overcast and  simultaneously cloudless.
premise_logic: exists e2 e1 s1 s2 x1 x2 x3 x4 x5 x6.(n_water(x5) & for(e1,e2) & a_out(s2) & Manner(e2,s2) & over(e2,x5) & on(x5,x6) & n_day(x6) & a_overcast(s1) & Theme(s1,x6) & Actor(e2,x1) & v_look(e2) & on(e1,x4) & n_dock(x4) & Actor(e1,x1) & v_sit(e1) & n_woman(x3) & n_man(x2) & subset_of(x3,x1) & subset_of(x2,x1))
hypothesis_logic: exists p1 x1 x4.(n_dock(x4) & n_thing(x1) & exists s1 s2 x2 x3.((x1 = x2) & rel(x2,x3) & at(x3,x4) & n_day(x3) & a_cloudless(s2) & Theme(s2,x3) & n_blue(x2) & a_beautiful(s1) & Theme(s1,x2)))