This is the Fourth Amendment to a commercial lease. Extract header fields, the two expansion premises square footages, and the base rent schedule. The base rent schedule must be one flat array: emit one entry per period bucket per premises. The page-3 tables are transposed — period buckets (1-12, 13-24, ..., 85-Expiration Date) run down the rows while rate and monthly rent are columns; flatten each bucket into its own array entry. amendmentDate must be normalized to YYYY-MM-DD. Capture periodMonths verbatim as labeled (e.g. '1 - 12', '85 - Expiration Date'). Note the RR table's rate column is visually offset by one row from the period labels in the source; align by reconciling annualRatePerSquareFoot x squareFeet / 12 = monthlyRent. Do not extract the DB First Floor or DB Second Floor expansion premises (they have no rent schedule). Do not extract recital prose or notes.
