Only feet are visible above the water.
Feet can be seen above the water.
seen is a synonym of visible.
exists s1 x1 x2.(n_water(x2) & above(s1,x2) & Theme(s1,x1) & a_visible(s1) & all x3.(n_foot(x3) -> (x1 = x3)) & n_foot(x1))
exists e1 p1 x1 x2.(n_water(x2) & ne_nam_feet(x1) & exists e2.(above(e2,x2) & Theme(e2,x1) & v_see(e2)) & Topic(e1,p1) & Actor(e1,x1) & v_can(e1))