A brown dog is panting hard on grass during a sunny day.
A black dog is rolling in snow.
The dog cannot roll and pant simultaneously.
exists e1 s1 s2 s3 x1 x2 x3.(during(e1,x3) & n_day(x3) & a_sunny(s3) & Theme(s3,x3) & a_hard(s2) & Manner(e1,s2) & on(e1,x2) & n_grass(x2) & Actor(e1,x1) & v_pant(e1) & n_dog(x1) & a_brown(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(in(e1,x2) & n_snow(x2) & Actor(e1,x1) & v_roll(e1) & n_dog(x1) & a_black(s1) & Theme(s1,x1))