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": ""}
 P-O 1346749  f5a Medicago   fabales 1:1   )smj 42.029   B 5 mi. SE of Milan.       >7    -83.6217 LUP2ULINA <%   TJ  MEDICAGO LUPULINA   1939-05-28 >        United States w#   PY# T Betty M. Robertson
{"catalogNumber": "1346749", "order": "Fabales", "family": "", "scientificName": "Medicago lupulina", "scientificNameAuthorship": "", "genus": "Medicago", "subgenus": "", "specificEpithet": "lupulina", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Betty M. Robertson", "recordNumber": "", "verbatimEventDate": "1939-05-28", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "5 mi. SE of Milan.", "decimalLatitude": "42.0279", "decimalLongitude": "-83.6217", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}