floating down a river at dusk
walking down the street
Floating down a river and walking down the street cannot be done simultaneously. One is floating, the other is walking. One happens on a body of water, the other happens on land.
exists e1 s1 x1 x2 x3.(at(e1,x3) & n_dusk(x3) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_float(e1) & n_river(x2) & n_thing(x1))
exists e1 x1 x2.(n_street(x2) & down(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_thing(x1))