Many small sailboats sitting at a dock.
 Many small sailboats docked.
Sailboats sitting at a dock are docked.
exists e1 s1 x1 x2 x3.(a_topic(x1) & at(e1,x3) & n_dock(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_sailboat(x1) & a_small(s1) & Theme(s1,x1) & n_quantity(x1))
exists e1 s1 x1.(Theme(e1,x1) & v_dock(e1) & n_sailboat(x1) & a_small(s1) & Theme(s1,x1) & n_quantity(x1))