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": ""}
  S.N. W7Ie   !o -83.657491  MEOICAGO LUPULINA 6T,    XWO 1221426   W john dix field, university botanical gardens  Z# lupul|na Fabales I  Fabaceae E9   - EDWARD G. VOSS  yf MICHIGAN   !> a 42.304442  f;eC 1968-08-08    "Field indenStif. characters: fs yellow, 10 or more in each head, 2-4mmT; small toothed upper end of lfl." jy  washtenaw &aM7K|   ANNE L. STEVENSON DX%i  medicago vV/  united states vvVj   zE? L. 
{"catalogNumber": "1221426", "order": "Fabales", "family": "Fabaceae", "scientificName": "Medicago lupulina", "scientificNameAuthorship": "L.", "genus": "Medicago", "subgenus": "", "specificEpithet": "lupulina", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Edward G. Voss", "recordedBy": "Anne L. Stevenson", "recordNumber": "s.n.", "verbatimEventDate": "1968-08-08", "habitat": "", "occurrenceRemarks": "\"Field indentif. characters: fls yellow, 10 or more in each head, 2-4mm; small toothed upper end of lfl.\"", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Washtenaw", "municipality": "", "locality": "John Dix Field, University Botanical Gardens", "decimalLatitude": "42.304442", "decimalLongitude": "-83.657491", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}