A dog, nose to the ground, walks in a grassy field.
A dog is walking outside in a field.
Grassy field implies outside, and walks is a paraphrase of is walking.
exists e1 s1 x1 x2 x3 x4.(n_ground(x3) & in(e1,x4) & n_field(x4) & a_grassy(s1) & Theme(s1,x4) & Actor(e1,x1) & v_walk(e1) & rel(x1,x2) & to(x2,x3) & n_nose(x2) & n_dog(x1))
exists e1 s1 x1 x2.(in(e1,x2) & n_field(x2) & a_outside(s1) & Manner(e1,s1) & Actor(e1,x1) & v_walk(e1) & n_dog(x1))