SPARQL for British Museum Satires with titles and dates

gistfile1.txt

PREFIX crm: <http://erlangen-crm.org/current/>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX thes: <http://collection.britishmuseum.org/id/thesauri/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX bmo: <http://collection.britishmuseum.org/id/ontology/>
PREFIX thesIdentifier: <http://collection.britishmuseum.org/id/>
SELECT DISTINCT ?id ?title ?name ?desc ?date 
    {
        ?object crm:P70i_is_documented_in <http://collection.britishmuseum.org/id/bibliography/294> .
         OPTIONAL {
            ?object crm:P48_has_preferred_identifier ?id }.
           OPTIONAL {
               ?object bmo:PX_physical_description ?desc } .
           OPTIONAL {         
            ?object crm:P108i_was_produced_by ?prodevent.
            ?prodevent crm:P9_consists_of ?prodpart .
            ?prodpart crm:P4_has_time-span ?timespan.
            ?timespan rdfs:label ?date} .
           OPTIONAL {
            ?object crm:P108i_was_produced_by ?prodevent2.
            ?prodevent2 crm:P9_consists_of ?prodpart2 .
            ?prodpart2 crm:P14_carried_out_by ?creator.
            ?creator skos:prefLabel ?name .
            ?creator skos:inScheme thesIdentifier:person-institution}
         OPTIONAL {
            ?object rdfs:label ?title }
    }

Multiple descriptions can also be present - once again resulting in duplication. Must be a better way of dealing with this?

Using the rdfs:label from the timespan results in a simple 'date' statement which can contain a single year, a year range, or a more general statement like "18thC(mid)". You could query for specific fields from the timespan to get more detailed date information