People man the lines in a factory as each one of them has a different and specific job to do.
people are working
"Man the lines" is a phrase used to indicate working on an assembly line.
exists e1 p1 s2 x1 x2 x3 x6.(n_job(x6) & a_specific(s2) & Theme(s2,x6) & n_thing(x2) & n_line(x2) & all x4.((n_thing(x4) & card_eq_1(x4)) -> exists e2 p2 s1 x5.(Theme(e2,x5) & Actor(e2,x4) & v_have(e2) & Topic(x5,p2) & exists e3 x7.(Theme(e3,x7) & Actor(e3,x5) & v_do(e3) & n_thing(x7)) & -(x5 = x6) & n_job(x5) & a_specific(s1) & Theme(s1,x5) & of(x4,x2))) & as(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_man(e1) & in(x2,x3) & n_factory(x3) & n_people(x1))
exists e1 x1.(Actor(e1,x1) & v_work(e1) & n_people(x1))