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": ""}
  4 MILES NORTHWEST OF ANDRIX cyI   VIRIDULvA gR   C. Marvin Rogers u21j    Z`R NASSELLA   4957 _      nassella viridula cP nY   ]kt UNITED STATES  1947-07-20 ~_ D        Y Pt (TRIN.) lBARKWORTH  
{"catalogNumber": "", "order": "", "family": "", "scientificName": "Nassella viridula", "scientificNameAuthorship": "(Trin.) Barkworth", "genus": "Nassella", "subgenus": "", "specificEpithet": "viridula", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "C. Marvin Rogers", "recordNumber": "4957", "verbatimEventDate": "1947-07-20", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "4 miles northwest of Andrix", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}