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": ""}
  B) f.n. hamerstrom, jr.   Eleocharis obtusa e*;[       R+O.g MARSH. SOIL: WET MUCK. ASSOCIES: ELEOCHAAIS SMALLII, ALISMA, POLYGONUM COCCINEUM, LEERSIA ORYZOIDES, CAREX.  et  547   ~M8a poales   [U] -84.005246    ` uniteo states  , (Willd.) Schult.  Cyperaceae eU9Bu    U& ELEOCHARIS     1942-08-03 .>hI 
{"catalogNumber": "", "order": "Poales", "family": "Cyperaceae", "scientificName": "Eleocharis obtusa", "scientificNameAuthorship": "(Willd.) Schult.", "genus": "Eleocharis", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "F.N. Hamerstrom, Jr.", "recordNumber": "547", "verbatimEventDate": "1942-08-03", "habitat": "Marsh. Soil: Wet muck. Associes: Eleocharis smallii, Alisma, Polygonum coccineum, Leersia oryzoides, Carex.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-84.005246", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}