Sparql: Get individuals with given data property -

being totally new sparql , rdf(s) i'm apologizing in advance if question seem little stupid, , should know better.

anyways ontologi goes this. subclasses got instances of spesific wine, example "dupont pome". different wines may have several data properties "year", "volume", "grapetype" etc.

how set query in can fetch out 1 or more individual spesific xsd:string in grape type property or volume property xsd:positiveinteger?

owl:things ----------wine --------------redwhine --------------whitewine --------------foowine 

i'm not entirely sure i'm formulering question well, please correct if i'm messing terminologies , such.

also have included query looked far if knew begin. statements in can results far in experience sparql, getting subclasses in relation superclass in table.

select distinct ?s {?s <volume_property_uri> "volume_value"^^xsd:positiveinteger}