A hand is seen holding a small strainer with a red substance inside.
There is a small strainer
A hand is seen holding a small strainer implies there is a small strainer as part of the original description with a red substance inside.
exists e1 p1 x1.(exists e2 s1 s2 x2 x3 x4.(Theme(e2,x2) & Actor(e2,x1) & v_hold(e2) & with(x2,x3) & n_inside(x3) & of(x3,x4) & n_substance(x4) & a_red(s2) & Theme(s2,x3) & n_strainer(x2) & a_small(s1) & Theme(s1,x2)) & Recipient(e1,p1) & Topic(e1,x1) & v_see(e1) & n_hand(x1))
exists p1 x1 s1 x2.((x1 = x2) & n_strainer(x2) & a_small(s1) & Theme(s1,x2))