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": ""}
 =1CF 1991-05-29 Cyperaceae s    @ MUHL. EX WILLD.        UNCHARTED HILL SEEP, 0.55 MILE SOUTHEAST OF ILLINOIS POWER PLANT, WEST SIDE OF & ABOVE THE WEST FORK OF THE VERMILION RIVER. DANVILLE NW 7.5 MINUTE TOPO. 51   18987 j  hystericina |   carex @   &f  POALES  MmA vermilion   LOY R. PHILLIPPE    ?   arex hystericina W   ILLINOIS ObB5   j United States
{"catalogNumber": "", "order": "Poales", "family": "Cyperaceae", "scientificName": "Carex hystericina", "scientificNameAuthorship": "Muhl. ex Willd.", "genus": "Carex", "subgenus": "", "specificEpithet": "hystericina", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Loy R. Phillippe", "recordNumber": "18987", "verbatimEventDate": "1991-05-29", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Illinois", "county": "Vermilion", "municipality": "", "locality": "Uncharted Hill Seep, 0.55 mile southeast of Illinois Power Plant, west side of & above the West Fork of the Vermilion River. Danville NW 7.5 minute topo.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}