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": ""}
TENNESSEE  K  (L.) G. MEY. AU        d r. kral  1H;^: Davidson  W Ipomoea pandurata CONVOLVULACEAE MKR4+   ~ UONITED STATES   ) 47392   x4)D Nashville, S side of city  J_K:9 PANDURATA    ]!8*  1460832  SOLANALES 0vSuu   5W8 r. kral  87ApU 1972-0@6-08 Ipomoea *    weeds beside railroad tracks d.h 
{"catalogNumber": "1460832", "order": "Solanales", "family": "Convolvulaceae", "scientificName": "Ipomoea pandurata", "scientificNameAuthorship": "(L.) G. Mey.", "genus": "Ipomoea", "subgenus": "", "specificEpithet": "pandurata", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "R. Kral", "recordedBy": "R. Kral", "recordNumber": "47392", "verbatimEventDate": "1972-06-08", "habitat": "weeds beside railroad tracks", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Tennessee", "county": "Davidson", "municipality": "", "locality": "Nashville, S side of city", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}