Two Asian men are doing carpentry work.
A single white guy is building a house.
Two Asian men is plural and of Asian ethnicity. A single white guy is singular and of Caucasian ethnicity.
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_work(x2) & of(x2,x3) & n_carpentry(x3) & n_man(x1) & a_asian(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e1 s1 s2 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_build(e1) & n_house(x2) & n_guy(x1) & a_white(s2) & Theme(s2,x1) & a_single(s1) & Theme(s1,x1))