Man and woman digging in the dirt.
The people are planting a garden.
Just because they are digging in the dirt doesn't mean they have to be planting a garden.
exists s1 x1 x2 x3 x4.(n_dirt(x4) & a_topic(s1) & subset_of(x2,s1) & in(x2,x4) & n_digging(x2) & of(x2,x3) & n_woman(x3) & subset_of(x1,s1) & n_man(x1))
exists e1 x1 x2.(n_people(x1) & Theme(e1,x2) & Actor(e1,x1) & v_plant(e1) & n_garden(x2))