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": ""}
    UX5 y J.K. Underw.       b var.      trs: t1n r15w sec 17 sw4 of se4    4 saline  ?;nQw US Hwy 67 & I-40, south side of Ark River. CAREX OXYLEPIS VA. PUBESCENS 1=  CAREX& t  cc     WT  arkansas 5377 P39     
{"catalogNumber": "", "order": "", "family": "", "scientificName": "Carex oxylepis var. pubescens", "scientificNameAuthorship": "J.K. Underw.", "genus": "Carex", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "var.", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "5377", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Arkansas", "county": "Saline", "municipality": "", "locality": "US Hwy 67 & I-40, south side of Ark River.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "TRS: T1N R15W sec 17 SW4 of SE4", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}