premise: A group of people of all ages is standing around a sign that says "Bienvenue Welcome," and the individuals in the foreground are jumping in the air with their hands raised. hypothesis: People at a airport awaiting a celebrity.
neutral: You can not assume the people are at an airport because they are standing around a sign that says "Bienvenue Welcome."  There are many other reasons the people are jumping in the air with their hands raised than waiting to meet a celebrity. They could be waving hello to the pope.