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": ""}
  , s.n.   ?4@6~ N. MALZEW     nK W POA  Russia ^y_?  Poa attenuata p S   *yZ j Poales           iUVj> 1709897    1903-05-18 Poaceae dAbY   OWV IRKUTSK  
{"catalogNumber": "1709897", "order": "Poales", "family": "Poaceae", "scientificName": "Poa attenuata", "scientificNameAuthorship": "", "genus": "Poa", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "N. Malzew", "recordNumber": "s.n.", "verbatimEventDate": "1903-05-18", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Russia", "stateProvince": "Irkutsk", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}