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": ""}
1304876 K  united states 6F:    4084   c      AM @o 1950-08-09   WSA Agrostis gigantea    u poales   mKA> ROADSIDE CALONG MONTREAL RIVER  AGROSTIS  5<O  charles d. richards ^    L : northeast of oelaware.  gigantea Jd Y  Poaceae 3&S     
{"catalogNumber": "1304876", "order": "Poales", "family": "Poaceae", "scientificName": "Agrostis gigantea", "scientificNameAuthorship": "", "genus": "Agrostis", "subgenus": "", "specificEpithet": "gigantea", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Charles D. Richards", "recordNumber": "4084", "verbatimEventDate": "1950-08-09", "habitat": "Roadside along Montreal River", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "northeast of Delaware.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}