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": ""}
 PN elizabeth halfert  3Y4Ay (Walter) Elliott   biflorum     c@ michigan s.n. _  POLYGONATUM  u     KJ+Bw asparagaceae  CASS   >5  Polygonatum biflorum     27HhG 1934-06-11   eF7Cf =asparagales  R Hf  1338794    united states A:Aa/   sM SILVER CREEK TWP.    c9_tn roadside under trees.  
{"catalogNumber": "1338794", "order": "Asparagales", "family": "Asparagaceae", "scientificName": "Polygonatum biflorum", "scientificNameAuthorship": "(Walter) Elliott", "genus": "Polygonatum", "subgenus": "", "specificEpithet": "biflorum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Elizabeth Halfert", "recordNumber": "s.n.", "verbatimEventDate": "1934-06-11", "habitat": "Roadside under trees.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Cass", "municipality": "", "locality": "Silver Creek Twp.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}