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": ""}
    POACEAE X  (L.) Roth /q70       arundinacea 0     s. kitamura b&Z N  CALAMAGROSTIS ARUNDINACEA z_  1932-09-13 Pn    7=?nc 1704371  O KANNAN: OUENS AN  Calamagrostis O F`      korea H$  
{"catalogNumber": "1704371", "order": "", "family": "Poaceae", "scientificName": "Calamagrostis arundinacea", "scientificNameAuthorship": "(L.) Roth", "genus": "Calamagrostis", "subgenus": "", "specificEpithet": "arundinacea", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "S. Kitamura", "recordNumber": "", "verbatimEventDate": "1932-09-13", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Korea", "stateProvince": "", "county": "", "municipality": "", "locality": "Kannan: Ouensan", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}