| http://www.w3.org/ns/prov#value | - The retaining wall in FIG. 16 comprises a double layer of treated pine planks 30A, 30B, 31A and 31B.If there is a rock feature, a tree stump, a lamp standard or some other object at or very close to one end of a retaining wall, the retaining wall may terminate without turning a corner.
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