A snowboarder wearing a blue jacket and green pants is speeding down the side of a mountain with snow shooting behind him, with a blue sky and green trees in the background.
Two people skiing slowly and cautiously with the dark night sky behind them.
The use of 'a' means that there is only one snowboarder, not two. A snowboarder can also be a skier, but cannot do both at the same time. They also cannot be speeding and going slowly at the same time.
exists e2 e1 s1 s2 s3 s4 s5 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 x11.(n_background(x11) & n_male(x5) & n_side(x5) & with(e2,x9) & in(x9,x11) & n_tree(x9) & a_green(s5) & Theme(s5,x9) & of(x9,x10) & n_sky(x10) & a_blue(s4) & Theme(s4,x9) & a_down(s3) & Manner(e2,s3) & Theme(e2,x5) & Actor(e2,x1) & v_speed(e2) & of(x5,x6) & with(x6,x7) & behind(x7,x5) & n_shooting(x7) & of(x7,x8) & n_snow(x8) & n_mountain(x6) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_pants(x3) & a_green(s2) & Theme(s2,x3) & of(x3,x4) & n_jacket(x4) & a_blue(s1) & Theme(s1,x3) & (x1 = x2) & n_snowboarder(x1))
exists e1 e2 s1 s2 x1 x2 x3 x4 x5.(n_thing(x5) & n_sky(x4) & of(x4,x5) & n_night(x5) & a_dark(s2) & Theme(s2,x4) & a_topic(x1) & r_cautiously(e2) & with(e2,x4) & behind(x4,x5) & Actor(e2,x3) & v_ski(e2) & (x1 = x3) & a_slowly(s1) & Manner(e1,s1) & Actor(e1,x2) & v_ski(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))