People sit on the curb watching an event.
people sit on the curb watching an event for st. patrick's day.
Just because people sit on the curb watching an event doesn't necessarily mean the event is for st. patrick's day.
exists e2 e1 x1 x2 x3.(n_curb(x2) & for(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_watch(e2) & n_event(x3) & on(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1))
exists e1 e2 x1 x2 x3 x4 x5 x6.(n_curb(x2) & for(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_watch(e2) & for(x3,x6) & n_day(x6) & of(x6,x4) & n_patrick(x4) & of(x4,x5) & n_st.(x5) & n_event(x3) & on(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1))