What is the {Class IIIB combustible liquid} with the {MAX(ceiling exposure limit)} whose {safety classification and labelling} is {NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response}  ?
What is the highest exposure limit of class IIIb that is considered safe per labelling standards?
Tell me the class lllb with the highest exposure limit whose safety is labelling standards.
SELECT ?o WHERE { ?o property:ceiling_exposure_limit ?f . ?o rdf:type ontology:Class_IIIB_combustible_liquid . ?o property:safety_classification_and_labelling resource:NFPA_704:_Standard_System_for_the_Identification_of_the_Hazards_of_Materials_for_Emergency_Response }
select ?ent where {
?ent <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q21009059>.

?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?ent .
?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P2405>.
?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj1.

?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?ent .
?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P4952> .
?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q51139288> .

}
ORDER BY DESC(?obj1)
LIMIT 5
select ?ent where { ?ent wdt:P31 wd:Q21009059 . ?ent wdt:P2405 ?obj . ?ent wdt:P4952 wd:Q51139288 } ORDER BY DESC(?obj)LIMIT 5 
disulfur dichloride o-anisidine toluene 2,4-diisocyanate toluene 2,4-diisocyanate