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": ""}
1973-06-12 o[N    O$S cyperaceae  tB va.           Carex intumescens var. intumescens MO-WS    44.289841 eC        I[:  Houghton Lake Willife Research Area (Porter Ranch) ca. 6 km SW of Houghton Lake. h. c. medford k4Qbi   
{"catalogNumber": "", "order": "", "family": "Cyperaceae", "scientificName": "Carex intumescens var. intumescens", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "var.", "infraspecificEpithet": "", "identifiedBy": "H. C. Medford", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1973-06-12", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "Houghton Lake Wildlife Research Area (Porter Ranch) ca. 6 km SW of Houghton Lake.", "decimalLatitude": "44.289841", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}