Mom strokes her sons head while he licks his lips and looks at the camera
A woman holds a child in her lap.
The son could be sitting anywhere in proximity to the mom, nothing implies that she holds a child in her lap.
exists e1 p1 s1 x1 x2 x3 x4 x5 x6 x7.(n_camera(x4) & n_look(x7) & n_lip(x6) & subset_of(x7,x5) & subset_of(x6,x5) & of(x5,x4) & n_male(x4) & n_male(x4) & at(e1,x4) & exists e2.(Theme(e2,x5) & Actor(e2,x4) & v_lick(e2)) & while(e1,p1) & Actor(e1,x1) & v_head(e1) & n_son(x1) & a_her(s1) & Theme(s1,x1) & of(x1,x3) & n_stroke(x3) & of(x1,x2) & n_mom(x2))
exists e1 x1 x2 x3.(in(e1,x3) & n_lap(x3) & of(x3,x1) & n_female(x1) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_child(x2) & n_woman(x1))