Several people are walking around outside.
A family is talking a walk.
Several people does not imply family.
exists e1 s1 x1 x2.(around(e1,x2) & n_outside(x2) & Actor(e1,x1) & v_walk(e1) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_talk(e1) & n_walk(x2) & n_family(x1))