what's beneath next to

What could possibly be in this tank? What is it for? Look at how the luminous green contrasts with the grey sky and brick buildings. Is it in fact a tank at all? Or is it an alien hiding and observing the world? What would you see if you were this tank? How would you feel?

Come up with your own ten questions about the tank and then using those and/or the questions above begin to construct answers. These answers may automatically aline themselves into a poem but if not have a look and see if you can rearrange or tweak it into a poem.