There are two young people with backpacks on and then are standing next to a hiking trail .
It is probably the case that two young people with backpacks prepare to hike down into the grand canyon .
It is impossible that two young people with backpacks prepare to hike down into the grand canyon .
It is probably the case that two young people with backpacks prepare to hike down into the grand canyon .
Two young people with backpacks prepare to hike down into the grand canyon .