The three people are wearing black blindfolds.
People are performing a magic trick while blindfolded.
Wearing a blindfold does not necessarily imply performing a magic trick.
exists e1 s1 x1 x2.(n_people(x1) & card_eq_3(x1) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_blindfold(x2) & a_black(s1) & Theme(s1,x2))
exists e1 s1 s2 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & Theme(s2,x3) & a_blindfolded(s2) & (x2 = x3) & n_trick(x2) & a_magic(s1) & Theme(s1,x2) & n_people(x1))