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": ""}
    2Y Timothy L. Walters      65zJ michigan       Centaurea k      SK6MiOpen dry sand barren with occasional srubs Associates: Pteridium aquilinum, Opunt|a, Centaurea maculosa, Rhus, Prunus, Ptelea, Berteroa incana,p Ascle pas tuberosus.    [L&a stoebe 0.03 mile north of 28th Avenue and 0.39 mile west of 77th Street. SW 1/4 ofSW 1/4 Sec 4. X    united states  =u 
{"catalogNumber": "", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "Centaurea", "subgenus": "", "specificEpithet": "stoebe", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Timothy L. Walters", "recordNumber": "", "verbatimEventDate": "", "habitat": "Open dry sand barren with occasional shrubs Associates: Pteridium aquilinum, Opuntia, Centaurea maculosa, Rhus, Prunus, Ptelea, Berteroa incana, Asclepias tuberosus.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "0.03 mile north of 28th Avenue and 0.39 mile west of 77th Street. SW 1/4 of SW 1/4 Sec 4.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}