SELECT ?property ?value WHERE { BIND (?? AS ?s) ?s ?property ?value . FILTER (isLiteral(?value)) } LIMIT 1000

Attributes

Mass Number
The "Mass Number" (A), also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus. Nuclides with the same value of $A$ are called isobars.
Applicable units are those of quantitykind:MassNumber
http://en.wikipedia.org/wiki/Mass_number
A
$A = Z + N$, where $Z$ is the atomic number and $N$ is the neutron number.
http://www.iso.org/iso/catalogue_detail?csnumber=31895
SELECT ?property ?object WHERE { BIND (?? AS ?s) ?s ?property ?object . FILTER (isIRI(?object)) FILTER (?property != rdf:type) FILTER (?property != rdfs:subClassOf) } LIMIT 1000
SELECT ?property ?subject WHERE { BIND (?? AS ?o) ?subject ?property ?o . FILTER (?property != rdf:type) FILTER (?property != rdfs:subClassOf) } LIMIT 1000

Incoming Relationships

property subject
has quantity kind Number
SELECT ?instance ?description WHERE { BIND (?? AS ?class) ?instance (rdf:type|owl:type) ?class . OPTIONAL { ?instance schema:description ?description . } } LIMIT 5000
Instances of this Class: No results found.
SELECT ?superclass ?description WHERE { ?? rdfs:subClassOf ?superclass . OPTIONAL { ?superclass (rdfs:comment|schema:description) ?description . } } LIMIT 5000
Superclasses of this Class: No results found.
SELECT ?subclass ?description WHERE { ?subclass rdfs:subClassOf ?? . OPTIONAL { ?subclass (rdfs:comment|schema:description) ?description . } } LIMIT 5000
Subclasses of this Class: No results found.