premise1: A group of mature folk are waving as they walk down a shopping center.
premise2: A group of people are on a stone street and waving up at the camera.
premise3: A group of people waving to a person on a balcony.
premise4: People outside walking and enjoying a sunny day.
premise: A group of mature folk are waving as they walk down a shopping center. A group of people are on a stone street and waving up at the camera. A group of people waving to a person on a balcony. People outside walking and enjoying a sunny day.
hypothesis: A crowd forms.