Construction workers taking a break and sitting near a sand castle.
People are by a sand castle.
The fact that construction workers sitting near a sand castle doesn't imply that there are other people by sand castle.
exists e2 e1 x1 x2 x3 x4 x5 x6 x7 x8 x9.(near(e2,x8) & n_castle(x8) & of(x8,x9) & n_sand(x9) & Actor(e2,x6) & v_sit(e2) & n_worker(x6) & of(x6,x7) & n_construction(x7) & near(e1,x4) & n_castle(x4) & of(x4,x5) & n_sand(x5) & Theme(e1,x3) & Actor(e1,x1) & v_take(e1) & n_break(x3) & n_worker(x1) & of(x1,x2) & n_construction(x2))
exists p1 x1.(exists x2 x3.(by(x1,x2) & n_castle(x2) & of(x2,x3) & n_sand(x3)) & n_people(x1))