A portly man wearing an athletic t-shirt is preparing to throw a weight.
A heavyset man wears a t-shirt and shorts.
the portly man need not be a heavyset and does not imply he is wearing shorts.
exists e1 e2 p1 s1 s2 x1 x2 x3.(Topic(e2,p1) & Actor(e2,x1) & v_prepare(e2) & exists e3 x4.(Theme(e3,x4) & Actor(e3,x1) & v_throw(e3) & n_weight(x4)) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_t-shirt(x3) & a_athletic(s2) & Theme(s2,x3) & (x1 = x2) & n_man(x1) & a_portly(s1) & Theme(s1,x1))
exists e1 x1 x2 x3 x4 x5.(Theme(e1,x3) & Actor(e1,x1) & v_wear(e1) & subset_of(x5,x3) & n_shorts(x5) & subset_of(x4,x3) & n_t-shirt(x4) & n_man(x1) & of(x1,x2) & n_heavyset(x2))