Two men performing in a band.
men putting on concert
Just because men are performing in a band it does not mean they are putting on a concert.
exists e1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & n_band(x3) & Actor(e1,x2) & v_perform(e1) & (x1 = x2) & n_man(x1) & card_eq_2(x1))
exists e1 s1 x1 x2 x3.(a_topic(x1) & a_on(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_put(e1) & n_concert(x3) & (x1 = x2) & n_man(x1))