Four road workers planting a tree.
Workers are outside helping with Earth Day.
It may not be earth day
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_plant(e1) & n_tree(x3) & n_worker(x1) & of(x1,x2) & n_road(x2) & card_eq_4(x1))
exists e1 s1 x1 x2 x3.(ne_tim_earth(x2) & for(s1,e1) & on(e1,x3) & ne_tim_day(x3) & with(e1,x2) & Actor(e1,x1) & v_help(e1) & Theme(s1,x1) & a_outside(s1) & n_worker(x1))