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": ""}
BIG PRAIRIE DESERT IK   xrsTJ1947-09-20  United States #  william b. drew i   oe  -85.64255 "abundant..., forming flat mats."  Xz  POACEAE  _tfl     ischaemum o       43.51863 Y ?    Newaygo T   Pb7 1482256        DIGITARIA
{"catalogNumber": "1482256", "order": "", "family": "Poaceae", "scientificName": "", "scientificNameAuthorship": "", "genus": "Digitaria", "subgenus": "", "specificEpithet": "ischaemum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "William B. Drew", "recordNumber": "", "verbatimEventDate": "1947-09-20", "habitat": "", "occurrenceRemarks": "\"abundant..., forming flat mats.\"", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Newaygo", "municipality": "", "locality": "Big Prairie Desert", "decimalLatitude": "43.51863", "decimalLongitude": "-85.64255", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}