A gang of bikers sit in traffic.
a group of women have tea
A gang of bikers is different from a group of women, and sitting in traffic is different than having tea.
exists e1 x1 x2 x3.(in(e1,x3) & n_traffic(x3) & Actor(e1,x1) & v_sit(e1) & of(x1,x2) & n_biker(x2) & n_gang(x1))
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_have(e1) & n_tea(x3) & of(x1,x2) & n_woman(x2) & n_group(x1))