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   "name": "Washington Market Company",
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  "assessment": {
   "what_happened": "Center Market opened as a market hall in 1872 and operated until 1931. In 1931 it was closed and demolished to make way for the National Archives Building. The site now hosts a civic use (National Archives).",
   "why": "The record does not state the cause of closure or demolition.",
   "where_it_stands": "The site is demolished and now hosts the National Archives Building; the current controlling entity is not stated in the record.",
   "for_a_planner": [
    "Precedent: conversion of a market hall to a civic building (National Archives).",
    "Policy tools: none documented in the record.",
    "Open questions: what zoning or approvals permitted the demolition, and what future civic or mixed\u2011use options are viable."
   ],
   "for_a_developer": [
    "Site size: 2.25 acres with 57,500\u202fsq\u202fft of former GLA and a FAR of 0.59.",
    "Control: ownership after 1931 is not recorded; the Washington Market Company held the site until demolition.",
    "Entitlement stage: the parcel is cleared and ready for new development.",
    "Constraints: no flood, transit, or environmental constraints are noted in the record.",
    "Market signals: opportunity score 40, with reasons citing a closed/demolished site and a median rent of $1,900 in the surrounding tract."
   ],
   "risks_and_unknowns": [
    "Cause of closure and demolition is not explained in the record.",
    "Current owner or governing entity of the site after 1931 is unknown.",
    "Any remaining subsurface structures or foundations from the original market are not documented.",
    "Environmental constraints (floodplain, wetlands, contamination) are not mentioned.",
    "Transit access and zoning designations are absent from the record.",
    "Several fields (value_per_acre, parcel_value_total) are null and marked as extracted, indicating potential data gaps.",
    "The record is marked as \u201cdraft\u201d verification, suggesting the information may be unreviewed."
   ],
   "data_quality": "partial",
   "one_line": "Center Market operated 1872\u20111931, demolished for the National Archives Building; site civic, size 2.25 acres, FAR 0.59, current control unknown.",
   "model": "nvidia/nemotron-3-super-120b-a12b",
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