premise: Man on cellphone walking in front of silver car next to green grass.
hypothesis: The man is talking on the cell phone.
explanation_1: A man on a cellphone is talking on it.
explanation_2: On cellphone is a rephrasing of talking on the cell phone.
explanation_3: Being on cellphone means talking on the cellphone.
premise_logic: exists s1 x1 x2 x3 x4 x5 x6 x7 x8.(a_topic(x1) & on(x1,x2) & in(x2,x4) & of(x4,x5) & to(x7,x8) & n_grass(x8) & a_green(s1) & Theme(s1,x8) & next(x5,x7) & n_thing(x7) & n_car(x5) & of(x5,x6) & n_silver(x6) & n_front(x4) & n_walking(x2) & of(x2,x3) & n_cellphone(x3) & n_man(x1))
hypothesis_logic: exists e1 x1 x2 x3.(n_phone(x2) & of(x2,x3) & n_cell(x3) & n_man(x1) & on(e1,x2) & Actor(e1,x1) & v_talk(e1))