premise: A line of rollerbladers crouch down aerodynamically
hypothesis: A group of rollerbladers are performing a trick for the crowd.
explanation_1: Rollerbladers can crouch down without performing a trick.
explanation_2: The fact that rollerbladers crouch down doesn't imply that they are performing a trick for the crowd.
explanation_3: Just because rollerbladers crouch down aerodynamically it does not men they are performing a trick from the crowd.
premise_logic: exists e1 s1 s2 x1 x2.(a_aerodynamically(s2) & Manner(e1,s2) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_crouch(e1) & of(x1,x2) & n_rollerblader(x2) & n_line(x1))
hypothesis_logic: exists e1 x1 x2 x3 x4.(n_crowd(x4) & for(e1,x4) & Theme(e1,x3) & Actor(e1,x1) & v_perform(e1) & n_trick(x3) & of(x1,x2) & n_rollerblader(x2) & n_group(x1))