Several people are around the steps of a building performing many different activities while wearing white and black clothing .
It is certain that people are gathered around a building wearing coloreless clothing while performing different activities .
It is certain that people are gathered around a building wearing coloreless clothing while performing different activities .
It is probably not the case that people are gathered around a building wearing coloreless clothing while performing different activities .
People are gathered around a building wearing coloreless clothing while performing different activities .