Two people grocery shopping at Walmart.
Married couple shopping for groceries
Two people alongside each other doesn't infer that they are married couple.
exists x1 x2.(ne_geo_walmart(x2) & a_topic(x1) & n_grocery(x1) & n_shopping(x1) & at(x1,x2) & n_people(x1) & card_eq_2(x1))
exists s1 x1 x2 x3.(a_topic(x1) & for(x1,x3) & n_grocery(x3) & n_shopping(x1) & of(x1,x2) & n_couple(x2) & a_married(s1) & Theme(s1,x1))