Multiple family members sweeping and cleaning the house.
The family is cleaning.
Multiple cleaning members are family.   Cleaning means sweeping the house.
exists e1 e2 x1 x2 x3 x4 x5 x6 x7.(n_house(x4) & Theme(e2,x4) & Actor(e2,x5) & v_clean(e2) & n_member(x5) & of(x5,x7) & n_family(x7) & (x5 = x6) & ne_nam_multiple(x6) & Theme(e1,x4) & Actor(e1,x1) & v_sweep(e1) & n_member(x1) & of(x1,x3) & n_family(x3) & (x1 = x2) & ne_nam_multiple(x2))
exists e1 x1.(n_family(x1) & Actor(e1,x1) & v_clean(e1))