Three women and two men are standing at the foot of a large staircase holding stringed instruments and a clarinet.
They are going up the stairs.
Standing at the foot of a staircase does not indicate that the group of people are going up, as they could just as easily have been coming down.
Not all standing at the foot of a staircase are going up the stairs.
We have no idea if they are going up the stairs, they could have just came down.