Refactor the unstructured text into a valid JSON dictionary. The key names follow the Darwin Core Archive Standard. If a key lacks content, then insert an empty string. Fill in the following JSON structure as required: {"catalogNumber": "", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}
  .re RUDBECKIA HIRTA VAR. SEROTINA   j 1891-07-28  rz Chippewa "LARGE CLUSTERS OF FLOWERS HAD HE BROWN CENTERS. IS IT A VARIETY OR FREAK." Y:Lq   46.082598 7    Michigan x     i? LIME ISLAND (Nutt.) ore ?vpn   1256371 Mv1  asterales s/9SY  mry l. freeman n@@fE   nr rudbeckia  7g VAR.   @ 1& ser9otina  -83.99169 D#e4e   United States sE:  
{"catalogNumber": "1256371", "order": "Asterales", "family": "", "scientificName": "Rudbeckia hirta var. serotina", "scientificNameAuthorship": "(Nutt.) Core", "genus": "Rudbeckia", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "var.", "infraspecificEpithet": "serotina", "identifiedBy": "", "recordedBy": "Mary L. Freeman", "recordNumber": "", "verbatimEventDate": "1891-07-28", "habitat": "", "occurrenceRemarks": "\"Large clusters of flowers had the brown centers. Is it a variety or freak.\"", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Chippewa", "municipality": "", "locality": "Lime Island", "decimalLatitude": "46.082598", "decimalLongitude": "-83.99169", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}