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": ""}
1504255 9    no data z8    2_ FIELD EDGE   % (L.) PERS.  F ; WALTER N. KOELZ         =! 1947-09-11   >0 18791       BIHAR iZF  TEPHROSA @T+D&  
{"catalogNumber": "1504255", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "(L.) Pers.", "genus": "Tephrosia", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "18791", "verbatimEventDate": "1947-09-11", "habitat": "Field edge", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Bihar", "county": "no data", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}