A crowd of people walking down the middle of a city street.
The group of people are running in the middle of the street.
Walking and running cannot be done simultaneously.
exists e1 s1 x1 x2 x3 x4 x5 x6.(n_middle(x4) & a_topic(x1) & of(x1,x2) & a_down(s1) & Manner(e1,s1) & Theme(e1,x4) & Actor(e1,x3) & v_walk(e1) & of(x4,x5) & n_street(x5) & of(x5,x6) & n_city(x6) & (x2 = x3) & n_people(x2) & n_crowd(x1))
exists e1 x1 x2 x3 x4.(n_street(x4) & n_middle(x3) & n_group(x1) & in(e1,x3) & of(x3,x4) & Actor(e1,x1) & v_run(e1) & of(x1,x2) & n_people(x2))