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": ""}
  * antennaria         v<4  west of roberts' landing, and nortKh of algon4c.   =G7 Dry ground in open. Abundant. In old field     m c_ asterales  3 1901-05-18      ST. CLAIR 42.66313 cx<Vv      united states SC+b   AV&2 1250057 
{"catalogNumber": "1250057", "order": "Asterales", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "Antennaria", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1901-05-18", "habitat": "Dry ground in open. Abundant. In old field", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "St. Clair", "municipality": "", "locality": "west of Roberts' Landing, and north of Algonac.", "decimalLatitude": "42.66313", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}