premise: Small red airplane flies over mountaintop dropping red substance over fire.
hypothesis: the airplane is flying.
explanation_1: There are both an airplane in a flying mode.
explanation_2: Small red airplane is a type of airplane, and flies is a synonym for flying.
explanation_3: The airplane is small and red.
premise_logic: exists e1 e2 s1 s2 s3 x1 x2 x3 x4.(for(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_drop(e2) & over(x3,x4) & n_fire(x4) & n_substance(x3) & a_red(s3) & Theme(s3,x3) & over(e1,x2) & n_mountaintop(x2) & Actor(e1,x1) & v_fly(e1) & n_airplane(x1) & a_red(s2) & Theme(s2,x1) & a_small(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 x1.(n_airplane(x1) & Actor(e1,x1) & v_fly(e1))