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": ""}
 Carex graciles=cens o2k   west nissouri township, w side of north thames river, from plover mills bridge to 2.2 km n of bridge, tjust w of north thames river, along thames valley trail. ;Q      Z CANADA 10829 QV MIDDLESEX ];              GB;e 1990-05-23     michael j. oldham  <  
{"catalogNumber": "", "order": "", "family": "", "scientificName": "Carex gracilescens", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Michael J. Oldham", "recordNumber": "10829", "verbatimEventDate": "1990-05-23", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Canada", "stateProvince": "", "county": "Middlesex", "municipality": "", "locality": "West Nissouri Township, W side of North Thames River, from Plover Mills bridge to 2.2 km N of bridge, just W of North Thames River, along Thames Valley Trail.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}