A man with tight blue jeans is walking while talking on his cellphone.
the man is on a surfboard
Walking and surfing on a surfboard are not the same.
exists e2 e1 s1 s2 x1 x2 x3.(while(e1,e2) & on(e2,x3) & n_cellphone(x3) & of(x3,x1) & n_male(x1) & Actor(e2,x1) & v_talk(e2) & Actor(e1,x1) & v_walk(e1) & with(x1,x2) & n_jeans(x2) & a_blue(s2) & Theme(s2,x2) & a_tight(s1) & Theme(s1,x2) & n_man(x1))
exists p1 x1.(n_man(x1) & exists x2.(on(x1,x2) & n_surfboard(x2)))