df_result = df
.join_left(df_labels, ["page_title", "qid"])
.derive({
year: (d) => op.parse_int(op.substring(d.timestamp, 0, 4))
})
.derive({
item: (d) =>
`<a href="https://wikidata.org/wiki/${d.qid}"> ${d.label} (${d.qid})`
})
.select(["item", "year"])