Two people performing in front of a crowd on a set of steps while wearing foil suits.
Two people sky dive from a submarine.
One can't sky dive and be performing in front of a crowd. A set of steps is not on a submarine.
exists e2 e1 x1 x2 x3 x4 x5 x6 x7 x8.(a_topic(x1) & while(e1,e2) & Theme(e2,x7) & Actor(e2,x2) & v_wear(e2) & n_suit(x7) & of(x7,x8) & n_foil(x8) & in(e1,x3) & of(x3,x4) & on(x4,x5) & of(x5,x6) & n_step(x6) & n_set(x5) & n_crowd(x4) & n_front(x3) & Actor(e1,x2) & v_perform(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists x1 x2 x3.(a_topic(x1) & from(x1,x3) & n_submarine(x3) & n_sky(x1) & Time(x1,x2) & n_dive(x2) & n_people(x1) & card_eq_2(x1))