They eventually reach a room of bats that are being used for an unknown purpose.

Now she seems obsessed with the thing, wishing to see it again for some unknown purpose.

He was standing there now, calmly waiting for some unknown purpose.

On the western side is small brick building of unknown purpose.

Mike could see what looked like barracks and a large building of unknown purpose.

Were those dead out of the past who were kept there for some unknown purpose?

He felt trapped, caught by these people for some unknown purpose.

For some unknown purpose, those lights were telling off the minutes!

Along with Carol in the room there were three objects of unknown purpose.

He is first seen in the office of Lottick, a major public figure, who has called him there for an unknown purpose.