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": ""}
   mv tenella    ,7. united states  YBVi puccinellia         n: Pacific Ocean, 4.75 miles west of Banjo Point, Amchitka Island, Aleutian Chain  / Pu-ccinellia tenella subsp. langeana 7617 u3(r0   _O  1423182  x!Pz hansford t. shacklette    h=AD SUBSP.  S; 1966-08-17    
{"catalogNumber": "1423182", "order": "", "family": "", "scientificName": "Puccinellia tenella subsp. langeana", "scientificNameAuthorship": "", "genus": "Puccinellia", "subgenus": "", "specificEpithet": "tenella", "verbatimTaxonRank": "subsp.", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Hansford T. Shacklette", "recordNumber": "7617", "verbatimEventDate": "1966-08-17", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "Pacific Ocean, 4.75 miles west of Banjo Point, Amchitka Island, Aleutian Chain", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}