query: SELECT ?item ?from WHERE {
    { ?item wdt:P31 wd:Q5. }
    { ?item wdt:P463 wd:Q12347661 }#FLE
    UNION
    { ?item wdt:P463 wd:Q20481873 }#PacoLibereco
    UNION
    { ?item wdt:P463 wd:Q33126 }#SAT
    UNION
    { ?item wdt:P463 wd:Q12349322 }#IKEK
    UNION
    { ?item wdt:P463 wd:Q3459207 }#SAT-Amikaro
    UNION
    { ?item wdt:P463 wd:Q2868177 }#SLEA
    UNION
    { ?item wdt:P463 wd:Q4430597 }#SEU
    UNION
    { ?item wdt:P463 wd:Q3459213 }#SATEB
    UNION
    { ?item wdt:P463 wd:Q3459212 }#SATeH
    UNION
    { ?item wdt:P463 wd:Q20480634 }#ALLE
    UNION
    { ?item wdt:P463 wd:Q20479129 }#Ouvrière
    UNION
    { ?item wdt:P463 wd:Q19724056 }#KEKK
    UNION
    { ?item wdt:P463 wd:Q12349350 }#IPE
    UNION
    { ?item wdt:P463 wd:Q4784646 }#NALE
    UNION
    { ?item wdt:P463 wd:Q12346345 }#DLEA
    { ?item p:P106 ?occupation. }
    ?occupation ps:P106 wd:Q860918.
    OPTIONAL { 
      ?occupation pqv:P580 [
          wikibase:timePrecision ?from_precision;
          wikibase:timeValue ?from_time;
        ];
    }
    BIND(YEAR(?from_time) AS ?from)
  }