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": ""}
 ROTH U   xxRt AGROSTIS GIGANTEA   T e. h. moss    ynpbL alberta  CANADA KA    WDzNr POALES  5l8x 14N03436 335 w    C4stle River; west of Pinchr [?] Creek a,q    1939-08-07 o37  River flats, with shrubs etc AMk      4 Pg gigantea Poaceae gwc     a?0 AGROSTIS
{"catalogNumber": "1403436", "order": "Poales", "family": "Poaceae", "scientificName": "Agrostis gigantea", "scientificNameAuthorship": "Roth", "genus": "Agrostis", "subgenus": "", "specificEpithet": "gigantea", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "E. H. Moss", "recordNumber": "335", "verbatimEventDate": "1939-08-07", "habitat": "River flats, with shrubs etc", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Canada", "stateProvince": "Alberta", "county": "", "municipality": "", "locality": "Castle River; west of Pincher [?] Creek", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}