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": ""}
18712 cj_        carex R31D5     0u-B6 muhl. ex willd.  $` Poales  Loy R. Phillippe, David Ketzner 9   United States `     Union R    C? atwood ridge reserch natural area, jonesboro 7.5 minu4te topographic map.   m9!  ILLINOIS     _``n ]trs: t13s r2w sec 5 se1/4 ne1/4  ]@K+ SPARGANIOIDES
{"catalogNumber": "", "order": "Poales", "family": "", "scientificName": "", "scientificNameAuthorship": "Muhl. ex Willd.", "genus": "Carex", "subgenus": "", "specificEpithet": "sparganioides", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Loy R. Phillippe, David Ketzner", "recordNumber": "18712", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Illinois", "county": "Union", "municipality": "", "locality": "Atwood Ridge Research Natural Area, Jonesboro 7.5 minute topographic map.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "TRS: T13S R2W sec 5 SE1/4 NE1/4", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}