A racing sailboat in the water.
The sailboat is on the dry dock for repairs.
If a boat is in the water it cannot also be on the dry dock.
exists x1 x2 x3.(n_water(x3) & a_topic(x1) & in(x1,x3) & n_sailboat(x1) & of(x1,x2) & n_racing(x2))
exists p1 s1 x1 x2.(n_dock(x2) & a_dry(s1) & Theme(s1,x2) & n_sailboat(x1) & exists x3.(on(x1,x2) & for(x2,x3) & n_repair(x3)))