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": ""}
  v 42.4457     Michigan v    +:8 PRUNELLA VULGARIS      I_ 940 at margin of thicet along causeway crossing swamp. soil: sandy. associes: hypericum perforatum, elymus virginicus, dioscorea villosa. 5    $ jarl k. hiltunen   ry Livingston  *@H E.S. eorge Reserve. Grid E-9        
{"catalogNumber": "", "order": "", "family": "", "scientificName": "Prunella vulgaris", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Jarl K. Hiltunen", "recordNumber": "940", "verbatimEventDate": "", "habitat": "At margin of thicket along causeway crossing swamp. Soil: sandy. Associes: Hypericum perforatum, Elymus virginicus, Dioscorea villosa.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "Livingston", "municipality": "", "locality": "E.S. George Reserve. Grid E-9", "decimalLatitude": "42.4457", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}