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": ""}
 1968-04-21 UM      hispidus         ranunculus h     ,%Lt 43.284866    vc=3  -84.079815  :/ Michigan    k THOMAS DUNCAN   F%<, united states VAR. X    
{"catalogNumber": "", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "Ranunculus", "subgenus": "", "specificEpithet": "hispidus", "verbatimTaxonRank": "var.", "infraspecificEpithet": "", "identifiedBy": "Thomas Duncan", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1968-04-21", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "", "decimalLatitude": "43.284866", "decimalLongitude": "-84.079815", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}