A man wearing a red t-shirt is snowboarding even though he's not wearing a jacket.
A snowboarder is wearing a tee shirt.
A snowboarder can be a man. A tee shirt is the same thing as a t-shirt.
exists e2 e1 p1 s1 x1 x2 x3.(r_even(e2) & -exists e3 x4.(Theme(e3,x4) & Actor(e3,x1) & v_wear(e3) & n_jacket(x4)) & n_male(x1) & though(e2,p1) & Actor(e2,x1) & v_snowboard(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_t-shirt(x3) & a_red(s1) & Theme(s1,x3) & (x1 = x2) & n_man(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_shirt(x2) & of(x2,x3) & n_tee(x3) & n_snowboarder(x1))