A person sits on a snowbank watching a snowboarder take a high leap.
Two people are sitting on a beach watching people parasail.
People suggests multiple people, whereas person suggests a singular. Also they cannot be on the beach and sitting on a snowbank a the same time
exists e1 e2 e3 s1 x1 x2 x3 x4 x5.(Theme(e3,x5) & Actor(e3,x1) & v_take(e3) & n_leap(x5) & a_high(s1) & Theme(s1,x5) & for(e1,e2) & Theme(e2,x4) & Actor(e2,x2) & v_watch(e2) & n_snowboarder(x4) & on(e1,x3) & n_snowbank(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_person(x1))
exists e1 e2 x1 x2 x3 x4.(for(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_watch(e2) & Time(x3,x4) & n_parasail(x4) & n_people(x3) & on(e1,x2) & n_beach(x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & card_eq_2(x1))