Two adults are leading about a dozen children down a sidewalk.
Children are being led down a sidewalk during a field trip.
Children being led down a sidewalk does not imply it being during a field trip.
exists e1 x1 x2 x3 x4.(down(e1,x4) & n_sidewalk(x4) & about(e1,x2) & n_child(x2) & of(x2,x3) & n_dozen(x3) & Actor(e1,x1) & v_lead(e1) & n_adult(x1) & card_eq_2(x1))
exists e1 s1 x1 x2 x3 x4.(during(e1,x3) & n_trip(x3) & of(x3,x4) & n_field(x4) & n_sidewalk(x2) & Time(e1,x2) & a_down(s1) & Manner(e1,s1) & Theme(e1,x1) & v_lead(e1) & n_child(x1))