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": ""}
   b calhoum Araceae f.(X  42.413278  OV     N ALISMATALES   3k!? Michgan   1938-07-31 8>;/s   WOLFFIA COLUMBIANA V;R     = [+ Lemna trisulca (also on separate sheet)][Inactive barcode. On same sheet as Spirodela polyrhiza with active barcode 1289942 and Lemna trisulca with inactive barcode 1289943]  L)<&  H. KARST.  !m WOLFFIA  1289944 ~  p.h. eschmeyer B?  502 $`]<    columbiana 9K   |Vfd Depth of watr: 1/2-5 Kft  Bottom: marl, fibrous peat
{"catalogNumber": "1289944", "order": "Alismatales", "family": "Araceae", "scientificName": "Wolffia columbiana", "scientificNameAuthorship": "H. Karst.", "genus": "Wolffia", "subgenus": "", "specificEpithet": "columbiana", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "P.H. Eschmeyer", "recordNumber": "502", "verbatimEventDate": "1938-07-31", "habitat": "Depth of water: 1/2-5 ft Bottom: marl, fibrous peat", "occurrenceRemarks": "[+ Lemna trisulca (also on separate sheet)][Inactive barcode. On same sheet as Spirodela polyrhiza with active barcode 1289942 and Lemna trisulca with inactive barcode 1289943]", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "Calhoun", "municipality": "", "locality": "", "decimalLatitude": "42.413278", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}