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": ""}
2016-07-23 G4   carex tenera RY    canada f   POALES  +DC   43442a LOzq   4b@ Rainoy River  LxXp Carex  Hi7] -91.21195 dewey F   XFG Cyperaceae 4875206 Z      B 48.752055019 -91.2119480129331 TENERA ,r=/  UNCOMMON AND LOCAL d&sn   M. J. OLDHAM BN3   G DISTURBED OPEN, WEEDY, GROUND ADJACENT TO RAILWAY TRACKS 1556448 *|O  M. J. OLDHAM cW   P%lX: Ontario CN railway, Kawene, at end of Hwy. 623. +/- 100m W 
{"catalogNumber": "1556448", "order": "Poales", "family": "Cyperaceae", "scientificName": "Carex tenera", "scientificNameAuthorship": "Dewey", "genus": "Carex", "subgenus": "", "specificEpithet": "tenera", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "M. J. Oldham", "recordedBy": "M. J. Oldham", "recordNumber": "43442a", "verbatimEventDate": "2016-07-23", "habitat": "Disturbed open, weedy, ground adjacent to railway tracks", "occurrenceRemarks": "uncommon and local", "associatedTaxa": "", "country": "Canada", "stateProvince": "Ontario", "county": "Rainy River", "municipality": "", "locality": "CN railway, Kawene, at end of Hwy. 623. +/- 100m", "decimalLatitude": "48.75206", "decimalLongitude": "-91.21195", "verbatimCoordinates": "48.752055019 -91.2119480129331", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}