A guy in a white shirt, sunglasses and black pants is riding his skateboard on a street with a lot of trees in the background.
The guy is rollerskating down the street.
One cannot rollerskate and skateboard at the same time
exists e1 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10.(n_background(x10) & with(e1,x8) & of(x8,x9) & in(x9,x10) & n_tree(x9) & n_lot(x8) & on(e1,x7) & n_street(x7) & Theme(e1,x6) & Actor(e1,x1) & v_ride(e1) & n_skateboard(x6) & of(x6,x1) & n_male(x1) & in(x1,x2) & rel(x2,x3) & subset_of(x5,x3) & n_pants(x5) & a_black(s2) & Theme(s2,x5) & subset_of(x4,x3) & n_sunglass(x4) & n_shirt(x2) & a_white(s1) & Theme(s1,x2) & n_guy(x1))
exists e1 s1 x1 x2.(n_street(x2) & n_guy(x1) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_rollerskate(e1))