A man in a uniform with glasses is playing a french horn.
A person is practicing for his upcoming performance
Just because someone is playing a french horn does not mean they have an upcoming performance.
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 s1 x1 x2.(for(e1,x2) & n_performance(x2) & a_upcoming(s1) & Theme(s1,x2) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_practice(e1) & n_person(x1))