Ex-libris Inscription Extractor
Extract structured fields from a bookplate or ownership inscription under the stated rules: recognise case-insensitive phrases 'ex libris', 'ex-libris', 'exlibris', 'from the library of' and 'from the books of', take everything after the earliest phrase as owner text with edge punctuation trimmed, and report the first 400-2100 integer found as the year (0 when none).
Description
Extract structured fields from a bookplate or ownership inscription under the stated rules: recognise case-insensitive phrases 'ex libris', 'ex-libris', 'exlibris', 'from the library of' and 'from the books of', take everything after the earliest phrase as owner text with edge punctuation trimmed, and report the first 400-2100 integer found as the year (0 when none).