Four people in period costumes sit outdoor at a table and curious onlookers stop to stare.
a group of people dressed for halloween sit outside
Just because  Four people in period costumes sit outdoor at a table and curious onlookers stop to stare does not mean they are dressed for halloween.
exists e1 e2 p1 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8.(at(e1,x5) & Topic(e2,p1) & exists e3.(Actor(e3,x6) & v_stare(e3)) & Theme(e2,x8) & Actor(e2,x7) & v_stop(e2) & (x5 = x8) & n_onlooker(x7) & a_curious(s2) & Theme(s2,x7) & n_onlooker(x6) & a_curious(s1) & Theme(s1,x6) & n_table(x5) & Time(e1,x4) & n_outdoor(x4) & Actor(e1,x1) & v_sit(e1) & in(x1,x2) & n_costume(x2) & of(x2,x3) & n_period(x3) & n_people(x1) & card_eq_4(x1))
exists e1 e2 s1 x1 x2 x3 x4.(a_outside(s1) & Manner(e2,s1) & Actor(e2,x1) & v_sit(e2) & of(x1,x2) & for(e1,x4) & n_halloween(x4) & Theme(e1,x3) & v_dress(e1) & (x2 = x3) & n_people(x2) & n_group(x1))