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": ""}
     (SW.) WILLD.  w   vCaUY Heteranthera limosa  &EW8 6530    1957-08-01 e !      zj-F heteranthera  PONTEDERIACEAE ]qr!    -F LIMOSA   Marshall U$    i R OKLAHOMA 1. MILES NORTHEAST OF WILLIS .F?  
{"catalogNumber": "", "order": "", "family": "Pontederiaceae", "scientificName": "Heteranthera limosa", "scientificNameAuthorship": "(Sw.) Willd.", "genus": "Heteranthera", "subgenus": "", "specificEpithet": "limosa", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "6530", "verbatimEventDate": "1957-08-01", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Oklahoma", "county": "Marshall", "municipality": "", "locality": "1.5 miles northeast of Willis", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}