What is the excipient with the highest kinematic viscosity whose safety classification and labelling is NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response?
select ?ent where { ?ent wdt:P31 wd:Q902638 . ?ent wdt:P2118 ?obj . ?ent wdt:P4952 wd:Q51139288 } ORDER BY DESC(?obj)LIMIT 5 
excipient: Q902638 nfpa 704: standard system for the identification of the hazards of materials for emergency response: Q51139288