premise: Chevrolet car on display at a convention
hypothesis: An expensive car on display at a convention for rich enthusiasts.
explanation_1: No way to know that the car is expensive just because it is on display.
explanation_2: We have no idea if it is an expensive car, it could be a cheap car. We have no idea if it is for rich enthusiasts, it could just be for a regular car buyer.
explanation_3: There are many types of conventions.  Not all conventions are for rich enthusiasts.
premise_logic: exists x1 x2 x3 x4.(a_topic(x1) & on(x1,x3) & at(x3,x4) & n_convention(x4) & n_display(x3) & n_car(x1) & (x1 = x2) & ne_nam_chevrolet(x2))
hypothesis_logic: exists s1 s2 x1 x2 x3 x4.(a_topic(x1) & on(x1,x2) & at(x2,x3) & for(x3,x4) & n_enthusiast(x4) & a_rich(s2) & Theme(s2,x4) & n_convention(x3) & n_display(x2) & n_car(x1) & a_expensive(s1) & Theme(s1,x1))
premise_sim: exists x1 x2 x3 x4.(on(x1,x3) & ne_nam_chevrolet(x2) & n_display(x3) & n_convention(x4) & n_car(x1) & at(x3,x4) & a_topic(x1) & (x1 = x2))
hypothesis_sim: exists s1 s2 x1 x2 x3 x4.(on(x1,x2) & n_enthusiast(x4) & n_display(x2) & n_convention(x3) & n_car(x1) & for(x3,x4) & at(x2,x3) & a_topic(x1) & a_rich(s2) & a_expensive(s1) & Theme(s2,x4) & Theme(s1,x1))