A man with a red helmet kayaking.
A man kayaking down rapids.
Just because a man is kayaking does not mean he is doing so down rapids.
exists s1 x1 x2 x3.(a_topic(x1) & with(x1,x2) & n_kayaking(x2) & of(x2,x3) & n_helmet(x3) & a_red(s1) & Theme(s1,x2) & n_man(x1))
exists e1 s1 x1 x2 x3.(a_topic(x1) & a_down(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_kayake(e1) & n_rapid(x3) & (x1 = x2) & n_man(x1))