Some staff members in yellow shirts help out with local kids in arts and crafts activities.
The staff members are volunteers.
volunteers without yellow shirts can't be identified as staff members.
exists e1 s1 s2 s3 x1 x2 x3 x4 x5 x6 x7 x8.(with(e1,x4) & subset_of(x7,x4) & n_activity(x7) & of(x7,x8) & n_craft(x8) & subset_of(x5,x4) & in(x5,x6) & n_art(x6) & n_kid(x5) & a_local(s3) & Theme(s3,x5) & a_out(s2) & Manner(e1,s2) & Actor(e1,x1) & v_help(e1) & in(x1,x3) & n_shirt(x3) & a_yellow(s1) & Theme(s1,x3) & n_member(x1) & of(x1,x2) & n_staff(x2))
exists p1 x1 x2.(n_member(x1) & of(x1,x2) & n_staff(x2) & exists x3.((x1 = x3) & n_volunteer(x3)))