What is {half-life} of {neutron} that is {uncertainty corresponds to} is {standard deviation} ?
Although no certain answer exists, what is the standard deviation of a neutron's half-life?
What is the standard deviation of the uncertainty of the half-life of a neutron?
SELECT ?l WHERE { ?p property:half-life ?l . resource:neutron property:half-life ?p . ?p property:uncertainty_corresponds_to resource:standard_deviation }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q2348> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P2114> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P2571> <http://wikidata.dbpedia.org/resource/Q159375>
} 

SELECT ?obj WHERE { wd:Q2348 p:P2114 ?s . ?s ps:P2114 ?obj . ?s pq:P2571 wd:Q159375 }