Man building something in a murky river, while wearing a hat.
A park ranger wearing his uniform hat is setting up a water testing experiment in the muddy river.
Murky does not indicate muddy. A man in a hat does not indicate a park ranger. People build things other than a water testing experiment.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7.(while(x7,e1) & n_event(x7) & rel(e1,x3) & in(x3,x6) & n_river(x6) & a_murky(s1) & Theme(s1,x6) & n_something(x3) & of(x3,x5) & n_building(x5) & of(x3,x4) & n_man(x4) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_hat(x2) & n_thing(x1))
exists e2 e1 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8 x9.(n_river(x9) & a_muddy(s2) & Theme(s2,x9) & in(e2,x9) & a_up(s1) & Manner(e2,s1) & Theme(e2,x6) & Actor(e2,x1) & v_set(e2) & n_experiment(x6) & of(x6,x8) & n_testing(x8) & of(x6,x7) & n_water(x7) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & n_hat(x4) & of(x4,x5) & n_uniform(x5) & of(x4,x1) & n_male(x1) & (x1 = x3) & n_ranger(x1) & of(x1,x2) & n_park(x2))