A woman is walking down the sidewalk as it rains.
A woman is singing in the rain.
You can not infer that the woman is singing while walking down the sidewalk
exists e1 p1 s1 x1 x2.(n_thing(x2) & n_sidewalk(x2) & exists e2.(Actor(e2,x2) & v_rain(e2)) & as(e1,p1) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_woman(x1))
exists e1 x1 x2.(n_rain(x2) & in(e1,x2) & Actor(e1,x1) & v_sing(e1) & n_woman(x1))