People gathered around a hot air balloon in the process of inflating .
The people are riding in a hot air balloon .
People gathered around a hot air balloon in the process of inflating.
The people are riding in a hot air balloon.
They could not be gathered around the hot air balloon if they are riding it they cannot do both at the same time.
They could not be gathered around the hot air balloon if they are riding it they can not do both at the same time .