A man in a white hat takes a drink.
A man in a hat is drinking.
takes a drink can also be said as  drinking.
exists e1 s1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_take(e1) & n_drink(x3) & in(x1,x2) & n_hat(x2) & a_white(s1) & Theme(s1,x2) & n_man(x1))
exists p1 x1 x2.(exists x3.((x1 = x3) & n_drinking(x3)) & in(x1,x2) & n_hat(x2) & n_man(x1))