Two baseball players warming up.
A couple of baseball players are doing warm-ups.
Warming up is essential to baseball players.
exists e1 s1 x1 x2 x3.(a_topic(x1) & a_up(s1) & Manner(e1,s1) & Actor(e1,x3) & v_warm(e1) & (x1 = x3) & n_player(x1) & of(x1,x2) & n_baseball(x2) & card_eq_2(x1))
exists e1 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_do(e1) & n_warm-up(x4) & of(x1,x2) & n_player(x2) & of(x2,x3) & n_baseball(x3) & n_couple(x1))