Two people taking a tight turn on motorcycles, the leading motorcycle is purple and the lagging is green.
People are riding motorcycles
Must be riding  motorcycles to take a tight turn and people can consist of two.
exists e1 e2 s1 s2 s3 x1 x2 x3 x4 x5.(n_lagging(x5) & Theme(s3,x5) & a_green(s3) & rel(s1,x2) & Theme(e2,x4) & Actor(e2,x3) & v_take(e2) & on(x4,x1) & n_motorcycle(x1) & n_motorcycle(x1) & n_turn(x4) & a_tight(s2) & Theme(s2,x4) & (x2 = x3) & n_people(x2) & card_eq_2(x2) & Theme(s1,x1) & a_purple(s1) & Actor(e1,x1) & v_lead(e1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_motorcycle(x2) & n_people(x1))