How it got to be underneath a railway line by the side of a road going under a bridge?

Possibility Number 1: It became disconnected from a distant washing line and blew here on a wind.
Possibility Number 2: It was thrown from a passing car.
Possibility Number 3: It was thrown from a passing train.
Possibility Number 4: Primark plan to open a new shop in Langley Burrell.

You may be able to think of other possibilities.