A person in a plaid shirt is laying on the ground taking a picture of a backpack which reads "vespa".
A person is taking a picture while laying on the grass.
WE CANNOT ASSUME THEY ARE LAYING IN THE GRASS AND NOT ON THE FLOOR.
exists e1 e3 e2 s1 x1 x2 x3 x4 x5 x6 x7 x8.(n_ground(x3) & on(e1,x3) & Theme(e3,x5) & Actor(e3,x4) & v_take(e3) & of(x5,x6) & Theme(e2,x8) & Actor(e2,x7) & v_read(e2) & n_vespa(x8) & (x6 = x7) & n_backpack(x6) & n_picture(x5) & (x3 = x4) & Actor(e1,x1) & v_lay(e1) & in(x1,x2) & n_shirt(x2) & a_plaid(s1) & Theme(s1,x2) & n_person(x1))
exists e2 e1 x1 x2 x3.(n_grass(x3) & while(e1,e2) & on(e2,x3) & Actor(e2,x1) & v_lay(e2) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_picture(x2) & n_person(x1))