| http://www.w3.org/ns/prov#value | - poly(vinyl alcohol-co-vinyl pyrrolidone), polyvinyl pyrrolidone, polyvinyl pyrrolidone copolymers such as poly(vinyl pyrrolidone-co-vinyl acetate), hydroxypropyl cellulose, sodium alginate, water-soluble phenol formaldehyde resins, carboxylated styrene
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