Two musicians are entertaining people in a city park, the flute player is wearing a blue feather boa.
The musicians are not very good.
The musicians does not mean there are only two.  If the musicians are not very good they would not be very entertaining.
exists p1 x1 x5 x6.(n_player(x5) & of(x5,x6) & n_flute(x6) & exists p2 s1 x2 x3 x4.((x1 = x2) & in(x2,x3) & exists e1 s2 x7 x8.(Theme(e1,x7) & Actor(e1,x5) & v_wear(e1) & n_boa(x7) & of(x7,x8) & n_feather(x8) & a_blue(s2) & Theme(s2,x7)) & that(x3,p2) & n_park(x3) & of(x3,x4) & n_city(x4) & n_people(x2) & a_entertaining(s1) & Theme(s1,x2)) & n_musician(x1) & card_eq_2(x1))
exists x1.(n_musician(x1) & -exists s1.(r_very(s1) & Theme(s1,x1) & a_good(s1)))