Boy peeking up from blue water.
The green waters of the lagoon eliminated any risk of would be swimmers running into the alligator's that resided within.
The water can be either blue or green.
exists e1 s1 s2 x1 x2.(ne_nam_boy(x1) & a_up(s2) & Manner(e1,s2) & from(e1,x2) & n_water(x2) & a_blue(s1) & Theme(s1,x2) & Actor(e1,x1) & v_peek(e1))
exists e1 s1 x1 x2 x6 x7.(n_'s(x6) & of(x6,x7) & n_alligator(x7) & n_lagoon(x2) & n_waters(x1) & a_green(s1) & Theme(s1,x1) & all x3.(n_risk(x3) -> exists p1.(exists e2 e3 x4 x5 x8 x9.((x3 = x4) & within(e3,x9) & n_thing(x9) & Actor(e3,x8) & v_reside(e3) & (x4 = x8) & into(e2,x6) & Actor(e2,x5) & v_run(e2) & (x4 = x5) & n_swimmer(x4)) & r_of(x3))) & Actor(e1,x1) & v_eliminate(e1) & of(x1,x2))