premise: A crowd walks about a square at night with smoke or fog drifting over them.
hypothesis: A group of people dance in the daytime.
explanation_1: Walking at night and dancing during the daytime cannot be a similar incident.
explanation_2: Walking about a square at night is very different from dance in the daytime.
explanation_3: It cannot be daytime and night simultaneously.
premise_logic: exists e1 x1 x2 x3 x4.(with(e1,x4) & over(x4,x1) & n_thing(x1) & (n_smoke(x4) | exists x5.(n_drifting(x4) & of(x4,x5) & n_fog(x5))) & about(e1,x2) & at(x2,x3) & n_night(x3) & n_square(x2) & Actor(e1,x1) & v_walk(e1) & n_crowd(x1))
hypothesis_logic: exists x1 x2 x3 x4.(n_daytime(x4) & a_topic(x1) & in(x1,x4) & of(x1,x2) & Time(x2,x3) & n_dance(x3) & n_people(x2) & n_group(x1))