A wet black dog shakes itself off.
A wet black dog is floating up in the sky
For a dog to shake, gravity is required.  Gravity is not required for floating.
exists e1 s1 s2 s3 x1 x2.(n_thing(x2) & a_off(s3) & Manner(e1,s3) & Theme(e1,x2) & Actor(e1,x1) & v_shake(e1) & n_dog(x1) & a_black(s2) & Theme(s2,x1) & a_wet(s1) & Theme(s1,x1))
exists e1 s1 s2 s3 x1 x2.(n_sky(x2) & in(e1,x2) & a_up(s3) & Manner(e1,s3) & Actor(e1,x1) & v_float(e1) & n_dog(x1) & a_black(s2) & Theme(s2,x1) & a_wet(s1) & Theme(s1,x1))