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": ""}
   A.G. ETTER $  Poaceae 1     U 46.889137   ` michigan MARQUETTE J|   OjQ= 217   /<Dc 1960-09-09  UNITED STATES =`j  Northeast shore, Rush Lake; Huron Mountain Clvb pv    2 Jd poales  KA&4C AGROSTIS GIGANTEA Roth AI em  1304880 [    ;p<C gigantea     [ sandstone. -87.899609 OEDI   
{"catalogNumber": "1304880", "order": "Poales", "family": "Poaceae", "scientificName": "Agrostis gigantea", "scientificNameAuthorship": "Roth", "genus": "", "subgenus": "", "specificEpithet": "gigantea", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "A.G. Etter", "recordNumber": "217", "verbatimEventDate": "1960-09-09", "habitat": "sandstone.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Marquette", "municipality": "", "locality": "Northeast shore, Rush Lake; Huron Mountain Club", "decimalLatitude": "46.889137", "decimalLongitude": "-87.899609", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}