| http://www.w3.org/ns/prov#value | - In foldable wheelchairs, wherein the seat 14 and back-rest 16 are provided in material that may be folded such as canvas or other cloth-like material, the cross-connection between the side frames 12 a, 12 b is some scissor-mechanism 12 i that allows the wheelchair 10 to be opened in an extended position or closed in a folded position.
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