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": ""}
  H. G. MACMILLAN, J. L. STEPHENS [981    ZPT ELYMU DAHURICUS  5 poaceae  Elymus *F.f     h  _ 1706390     dahuricus O    $x hulu&nbuir  manchuria; 1 mi. so. of hailar @?   china Q6Xk   9 Q   hRf<  Inn3r Mongolia  - 1934-08-06 Turcz. X  Poales taG= 
{"catalogNumber": "1706390", "order": "Poales", "family": "Poaceae", "scientificName": "Elymus dahuricus", "scientificNameAuthorship": "Turcz.", "genus": "Elymus", "subgenus": "", "specificEpithet": "dahuricus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "H. G. MacMillan, J. L. Stephens", "recordNumber": "19", "verbatimEventDate": "1934-08-06", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "China", "stateProvince": "Inner Mongolia", "county": "Hulunbuir", "municipality": "", "locality": "Manchuria; 1 mi. so. of Hailar", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}