2 people sit barefoot in a tent, one with a beer and one lounging playing a guitar.
Two people are camping.
Although it is known that two people are in a tent, it cannot be assumed that they are camping.
exists e1 e2 x1 x2 x3 x4 x5 x6 x7 x8 x9.(in(e1,x3) & rel(x3,x4) & subset_of(x7,x4) & Theme(e2,x9) & Actor(e2,x8) & v_play(e2) & n_guitar(x9) & (x7 = x8) & n_thing(x7) & card_eq_1(x7) & subset_of(x5,x4) & with(x5,x6) & n_beer(x6) & n_thing(x5) & card_eq_1(x5) & n_tent(x3) & Time(e1,x2) & n_barefoot(x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & n_date(x1) & a_date_day_02(x1) & a_date_day_02(x1))
exists e1 x1.(Actor(e1,x1) & v_camp(e1) & n_people(x1) & card_eq_2(x1))