During a small summer celebration, two adults play the flute and the tuba.
At a party at the beach, there are two humans playing in a band.
A party at the beach doesn't necessarily mean it's summer. Two adults playing a flute and tuba don't make them a band.
exists e1 s1 x1 x2 x3 x4 x5 x6.(n_tuba(x4) & n_flute(x3) & during(e1,x5) & n_celebration(x5) & of(x5,x6) & n_summer(x6) & a_small(s1) & Theme(s1,x5) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & subset_of(x4,x2) & subset_of(x3,x2) & n_adult(x1) & card_eq_2(x1))
exists p1 x1 x2 x3.(n_beach(x3) & at(p1,x2) & at(x2,x3) & n_party(x2) & exists e1 x4 x5 x6.((x1 = x4) & in(e1,x6) & n_band(x6) & Actor(e1,x5) & v_play(e1) & (x4 = x5) & n_human(x4) & card_eq_2(x4)))