premise: A white duck expanding its wings in the water.
hypothesis: The duck is a rare breed, most thought to have been driven into extinction years ago.
explanation_1: White ducks have not been driven to extinction.
explanation_2: A duck does not have to be white.
explanation_3: The duck is either  a rare breed or is commonly seen expanding its wings in the water.
premise_logic: exists e1 s1 x1 x2 x3 x4.(n_water(x4) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_expand(e1) & in(x3,x4) & n_wing(x3) & of(x3,x1) & n_thing(x1) & (x1 = x2) & n_duck(x1) & a_white(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 p1 p2 x1 x2 x3.(n_duck(x1) & ago(p1,x2) & Recipient(e1,p2) & Topic(e1,x3) & v_think(e1) & exists e2 x5 x6.(into(e2,x5) & n_year(x5) & of(x5,x6) & n_extinction(x6) & Theme(e2,x3) & v_drive(e2)) & (x2 = x3) & n_most(x2) & exists s1 x4.((x1 = x4) & n_breed(x4) & a_rare(s1) & Theme(s1,x4)))