A man in a uniform with glasses is playing a french horn.
A person is getting ready to perform his musical ability.
Just because a man in a uniform with glasses is playing a french horn does not mean his musical ability.
exists e1 s1 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_play(e1) & n_horn(x4) & a_french(s1) & Theme(s1,x4) & in(x1,x2) & with(x2,x3) & n_glass(x3) & n_uniform(x2) & n_man(x1))
exists e1 p1 s2 x1 x2.(exists p2 s1.(Topic(s1,p2) & Actor(s1,x1) & a_ready(s1) & exists e2.(Theme(e2,x2) & Actor(e2,x1) & v_perform(e2))) & n_ability(x2) & a_musical(s2) & Theme(s2,x2) & of(x2,x1) & n_male(x1) & Topic(e1,p1) & Actor(e1,x1) & v_get(e1) & n_person(x1))