A group of women at a knitting class.
Some women knitting.
A group of women are some women, and a knitting class implies knitting.
exists e1 x1 x2 x3.(a_topic(x1) & at(x1,x3) & n_class(x3) & Actor(e1,x3) & v_knit(e1) & of(x1,x2) & n_woman(x2) & n_group(x1))
exists e1 x1 x2.(a_topic(x1) & Actor(e1,x2) & v_knit(e1) & (x1 = x2) & n_woman(x1))