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": ""}
 ichigan  Nxg&    nigra O3C      1220117 .K   OLEACEAE , U    |W? FRAXINUS 41.86524 ~  607S  1]O   nP Q/ occasional in small thicket in medow, near creek.      Y42g Marshall  r2w, t7s, section 15. trail rd., s. side. about 20 km se of hillsdale. HkQjy   fraxinus nigra i.  
{"catalogNumber": "1220117", "order": "", "family": "Oleaceae", "scientificName": "Fraxinus nigra", "scientificNameAuthorship": "Marshall", "genus": "Fraxinus", "subgenus": "", "specificEpithet": "nigra", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "607", "verbatimEventDate": "", "habitat": "Occasional in small thicket in meadow, near creek.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "R2W, T7S, section 15. Trail Rd., S. side. About 20 km SE of Hillsdale.", "decimalLatitude": "41.86524", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}