Some construction workers are taking a break.
Some union workers are taking their mandatory two hour lunch break.
Not all construction workers are union workers.
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_take(e1) & n_break(x3) & n_worker(x1) & of(x1,x2) & n_construction(x2))
exists e1 p1 s1 x1 x2 x3 x4.(exists s2.(Theme(s2,x3) & a_break(s2)) & Recipient(e1,p1) & Actor(e1,x1) & Topic(e1,x3) & v_take(e1) & n_lunch(x3) & of(x3,x4) & n_hour(x4) & card_eq_2(x3) & a_mandatory(s1) & Theme(s1,x3) & of(x3,x1) & n_thing(x1) & n_worker(x1) & of(x1,x2) & n_union(x2))