Two men are helping another man cross a stream.
The water in the stream is moving fast, and is hard to cross.
two men helping the other to cross the stream does not imply the stream is moving fast and hard to cross
exists e1 e2 x1 x2 x3 x4.(Theme(e2,x4) & Actor(e2,x1) & v_cross(e2) & n_stream(x4) & Theme(e1,x3) & Actor(e1,x2) & v_help(e1) & n_man(x3) & -(x3 = x1) & n_man(x1) & n_man(x1) & (x1 = x2) & card_eq_2(x1))
exists e1 p1 s1 s2 x1 x2 x4 x5.(n_stream(x5) & n_water(x4) & n_stream(x2) & n_water(x1) & Topic(s2,p1) & a_hard(s2) & exists e2 x3.(Theme(e2,x4) & Actor(e2,x3) & v_cross(e2) & in(x4,x5) & n_thing(x3)) & a_fast(s1) & Manner(e1,s1) & Actor(e1,x1) & v_move(e1) & in(x1,x2))