Fix 'position held' qualifiers for merged constituencies

migrate-merged-constituencies.rq

# Update 'position held' statements for Members of the Parliament of Ghana 
# to point at the correct constituency items, after merging
#
# wd sparql migrate-merged-constituencies.rq | jq -r '.[] | "\(.ps) P768 \(.old) \(.new)"' | wd update-qualifier --batch --summary "Update constituencies qualifiers after merges"

SELECT DISTINCT ?ps ?id ?old ?new WHERE {
  ?id p:P39 ?ps .
  ?ps ps:P39 wd:Q61659845 ; pq:P768 ?old .
  ?old owl:sameAs ?new .
}

I ran a first batch of these as https://editgroups.toolforge.org/b/wikibase-cli/0dcca21f3dfdf/ — there will be more later, after I've merged more items.

And a second as https://tools.wmflabs.org/editgroups/b/wikibase-cli/88610326326f2/