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": ""}
 spartina EX   Poales 7     :Gw gracilis  c Trin.  OYQ SOUTH DAKOTA UN|TED STATES r      1424225 W. H. Over =c    SPARTINA GRACILIS + .s[  1920-07-09 Zx          R harding  |2Y= poaceae S.N. ]   e:0 Cave Hills
{"catalogNumber": "1424225", "order": "Poales", "family": "Poaceae", "scientificName": "Spartina gracilis", "scientificNameAuthorship": "Trin.", "genus": "Spartina", "subgenus": "", "specificEpithet": "gracilis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "W. H. Over", "recordNumber": "s.n.", "verbatimEventDate": "1920-07-09", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "South Dakota", "county": "Harding", "municipality": "", "locality": "Cave Hills", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}