| http://www.w3.org/ns/prov#value | - Further, in the roller which is exposed to the heavy load and stopped for a sufficiently long time, such as in an escalator and the like, when using this kind of conventional roller to which the conventional soft synthetic resin tire is mounted, the synthetic resin tire cannot stand against the heavy load while the rotating operation of the roller is stopped, so that there is a problem in that the
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