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": ""}
   acumnatus o    Z powell airport, along i-75, exit 112.  _ky Low, wet area   JUNCUS ACUMINATUS U      poales XU;      ~ JUNCACEAE   9mZ Tennessee 95-269 _   knox o   #8=3 1446453   DB.v michx.   Adh2t vern e. mcneilus
{"catalogNumber": "1446453", "order": "Poales", "family": "Juncaceae", "scientificName": "Juncus acuminatus", "scientificNameAuthorship": "Michx.", "genus": "", "subgenus": "", "specificEpithet": "acuminatus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Vern E. McNeilus", "recordNumber": "95-269", "verbatimEventDate": "", "habitat": "Low, wet area", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Tennessee", "county": "Knox", "municipality": "", "locality": "Powell Airport, Along I-75, Exit 112.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}