Question: What is the safety classification and labeling for Nitric Acid through the NFPA Health subsection NFPA 704:Standard system for the identification of the hazards of materials for emergency response?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q83320 p:P4952 ?s . ?s ps:P4952 wd:Q51139288 . ?s pq:P993 ?value}