A white heron flies into the sky.
A bird flying south for the winter
Birds can fly in other seasons besides winter.
exists e1 s1 x1 x2.(n_sky(x2) & into(e1,x2) & Actor(e1,x1) & v_fly(e1) & n_heron(x1) & a_white(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(n_winter(x3) & a_topic(x1) & for(e1,x3) & a_south(s1) & Manner(e1,s1) & Actor(e1,x2) & v_fly(e1) & (x1 = x2) & n_bird(x1))