Three people trudge through the snow wearing snowshoes and using walking sticks.
Three crash survivors trying to reach civilization
The fact that three people trudge through the snow doesn't imply that they are crash survivors and they are trying to reach civilization
exists e1 e3 e2 x1 x2 x3 x4 x5.(n_snow(x2) & for(e1,e3) & Theme(e3,x4) & Actor(e3,x1) & v_use(e3) & n_stick(x4) & of(x4,x5) & n_walking(x5) & for(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_wear(e2) & n_snowsho(x3) & through(e1,x2) & Actor(e1,x1) & v_trudge(e1) & n_people(x1) & card_eq_3(x1))
exists e1 p1 x1 x2 x3.(a_topic(x1) & Topic(e1,p1) & Actor(e1,x3) & v_try(e1) & exists e2 x4.(Theme(e2,x4) & Actor(e2,x3) & v_reach(e2) & n_civilization(x4)) & (x1 = x3) & n_survivor(x1) & of(x1,x2) & n_crash(x2) & card_eq_3(x1))