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": ""}
Calamus j,     D+<+ arecales WALTER N. KOELZ &RY:    $50_ india erectus WQJ   29400 `_  1067 k  ,  ROXB. JuU;       CALAMUS ERECTUS   SONAPAHAR dKxvK         a] m  1052054  
{"catalogNumber": "1052054", "order": "Arecales", "family": "", "scientificName": "Calamus erectus", "scientificNameAuthorship": "Roxb.", "genus": "Calamus", "subgenus": "", "specificEpithet": "erectus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "29400", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "India", "stateProvince": "", "county": "", "municipality": "", "locality": "Sonapahar", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "1067", "maximumElevationInMeters": ""}