Tennis players are seen conversing on the court.
Tennis players are walking off the court.
Players cannot be on and off the court.
exists e1 p1 x1 x2 x3.(n_court(x3) & exists e2.(on(e2,x3) & Actor(e2,x1) & v_converse(e2)) & Recipient(e1,p1) & Topic(e1,x1) & v_see(e1) & n_player(x1) & (x1 = x2) & ne_nam_tennis(x2))
exists e1 s1 x1 x2 x3.(n_court(x3) & a_off(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x1) & v_walk(e1) & n_player(x1) & (x1 = x2) & ne_nam_tennis(x2))