user: Question: Which Label-Nr has a Year smaller than 1968, and a Label of World Pacific, and an album of Chile Con Soul?
Columns: ['Year', 'Title', 'From album', 'Label', 'Label-Nr']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1962.0, "Tonight / Sinnin' Sam", "Lookin' Ahead", 'Pacific Jazz', 'X-340']
SQL:

assistant: SELECT "Label-Nr" FROM "Table" WHERE "Year" < 1968.0 AND "Label" = 'World Pacific' AND "From album" = 'Chile Con Soul';