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": ""}
 RUBIACEAE [       Ohio 3B e6     1998-06-01 ^            1(Gsu Over 50 feet away from river, in oxbow area of Maple-elm Ottawa River floodplain. Associates: Acer negundo, A. saccharinum, Ulmus, Celtis, Alliaria, Thalictrum, PartRhenocissus, Polygonum virginianum, Toxicodendron radicans, Ariseama spp., Carex grayii     
{"catalogNumber": "", "order": "", "family": "Rubiaceae", "scientificName": "", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1998-06-01", "habitat": "Over 50 feet away from river, in oxbow area of Maple-elm Ottawa River floodplain. Associates: Acer negundo, A. saccharinum, Ulmus, Celtis, Alliaria, Thalictrum, Parthenocissus, Polygonum virginianum, Toxicodendron radicans, Ariseama spp., Carex grayii", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Ohio", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}