An Indian man is scratching the back of his head while thinking.
an indian man scratches an itch on his head
Scratching the back of his head is not necessarily because of an itch on his head.
exists e2 e1 s1 x1 x2 x3.(n_head(x3) & of(x3,x2) & n_male(x2) & n_back(x2) & while(e1,e2) & Actor(e2,x1) & v_think(e2) & Theme(e1,x2) & Actor(e1,x1) & v_scratch(e1) & of(x2,x3) & n_man(x1) & a_indian(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_scratch(e1) & on(x2,x3) & n_head(x3) & of(x3,x1) & n_male(x1) & n_itch(x2) & n_man(x1) & a_indian(s1) & Theme(s1,x1))