premise: A group of firemen and officials prepare to turn a car right side after a crash.
hypothesis: A group of people are helping an accident victim on the highway.
explanation_1: Just because there was a crash does not mean people are helping an accident victim.  The crash does not have to have happened on a highway.
explanation_2: The people helping at the accident may not be firemen or officials, they may be regular people.  The victim may or may not be in the car, if it is being turned over.  The crash could have been anywhere, it didn't have to be on the highway.
explanation_3: There is no mention of a highway of the victim being injured.
premise_logic: exists e1 p1 x1 x2 x3 x4.(Topic(e1,p1) & Actor(e1,x1) & v_prepare(e1) & exists e2 s1 x5 x6 x7.(after(e2,x7) & n_crash(x7) & Theme(e2,x5) & Actor(e2,x1) & v_turn(e2) & n_side(x5) & a_right(s1) & Theme(s1,x5) & of(x5,x6) & n_car(x6)) & of(x1,x2) & subset_of(x4,x2) & n_official(x4) & subset_of(x3,x2) & n_fireman(x3) & n_group(x1))
hypothesis_logic: exists e1 x1 x2 x3 x4 x5.(n_highway(x5) & Theme(e1,x3) & Actor(e1,x1) & v_help(e1) & on(x3,x5) & n_victim(x3) & of(x3,x4) & n_accident(x4) & of(x1,x2) & n_people(x2) & n_group(x1))
premise_sim: exists e1 p1 x1 x2 x3 x4.(v_prepare(e1) & subset_of(x4,x2) & subset_of(x3,x2) & of(x1,x2) & n_official(x4) & n_group(x1) & n_fireman(x3) & exists e2 s1 x5 x6 x7.(v_turn(e2) & of(x5,x6) & n_side(x5) & n_crash(x7) & n_car(x6) & after(e2,x7) & a_right(s1) & Theme(s1,x5) & Theme(e2,x5) & Actor(e2,x1)) & Topic(e1,p1) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2 x3 x4 x5.(v_help(e1) & on(x3,x5) & of(x3,x4) & of(x1,x2) & n_victim(x3) & n_people(x2) & n_highway(x5) & n_group(x1) & n_accident(x4) & Theme(e1,x3) & Actor(e1,x1))