An old man was outside digging in the dirt on a summer day.
The old man was treasure hunting in his backyard
Digging dirt is done for many purposes not only for treasure hunting.
exists p1 s1 x1 x2 x3 x4.(n_dirt(x2) & on(p1,x3) & n_day(x3) & of(x3,x4) & n_summer(x4) & in(p1,x2) & exists s2 x5.((x1 = x5) & n_digging(x5) & a_outside(s2) & Theme(s2,x5)) & n_man(x1) & a_old(s1) & Theme(s1,x1))
exists p1 s1 x1 x3.(n_backyard(x3) & of(x3,x1) & n_male(x1) & n_man(x1) & a_old(s1) & Theme(s1,x1) & exists s2 x2.((x1 = x2) & in(x2,x3) & n_hunting(x2) & a_treasure(s2) & Theme(s2,x2)))