Several people are around the steps of a building performing many different activities while wearing white and black clothing.
Many people are outside of the building.
several people are many people and steps of a building is the outside of the building
exists p1 s1 x1 x2 x6.(n_activity(x6) & n_step(x2) & exists e2 e1 s2 s3 x3 x4 x5 x7.(around(x1,x2) & of(x2,x3) & while(e1,e2) & Theme(e2,x7) & Actor(e2,x4) & v_wear(e2) & n_clothing(x7) & a_black(s3) & Theme(s3,x7) & a_white(s2) & Theme(s2,x7) & Theme(e1,x5) & Actor(e1,x4) & v_perform(e1) & -(x5 = x6) & n_activity(x5) & n_quantity(x5) & (x3 = x4) & n_building(x3)) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_building(x2) & of(e1,x2) & r_outside(e1) & Actor(e1,x1) & v_be(e1) & n_people(x1) & n_quantity(x1))