What is {safety classification and labelling} of {carbon dioxide} that is {NFPA Instability} is {0} ?
Which is the instability rating of NFPA for carbon dioxide?
What is the NFPA instability rating for carbon dioxide?
SELECT ?u WHERE { ?f property:NFPA_Instability ?a . resource:carbon_dioxide property:safety_classification_and_labelling ?f . FILTER ( CONTAINS ( ?a , '0' ) ) . ?f property:safety_classification_and_labelling ?u }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q1997> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P4952> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P995> <0>
} 

SELECT ?obj WHERE { wd:Q1997 p:P4952 ?s . ?s ps:P4952 ?obj . ?s pq:P995 ?x filter(contains(?x , '0')) }