A band is probably rehearsing for an upcoming show.
The band has their instruments
Rehearsing does not necessarily mean they has their instruments.
exists e1 s1 s2 x1 x2.(a_probably(s2) & Manner(e1,s2) & for(e1,x2) & n_show(x2) & a_upcoming(s1) & Theme(s1,x2) & Actor(e1,x1) & v_rehearse(e1) & n_band(x1))
exists e1 x1 x2.(n_instrument(x2) & of(x2,x1) & n_thing(x1) & n_band(x1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1))