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": ""}
 6&x 1936-08-04 42.63333  %  depth of waer: 2 ft. bottom: floculent peat  =u        W (a. benn.) rydb. 249 *s   WS03 potamoqetonaceae     .z<% carl o. grassl Potamogeton richardsonii Z  POTAMOGETON 6  1281723    richardsonii doQu   * I, United States [STIPULES COAR5ELY FIBROUS]; C. M. TARZWELL (IFR) J   ub Michigan  mud lake t3n, r10w, sec. 17 0  Bk   d> -85.5  C BARRY  nik^C alismatales
{"catalogNumber": "1281723", "order": "Alismatales", "family": "Potamogetonaceae", "scientificName": "Potamogeton richardsonii", "scientificNameAuthorship": "(A. Benn.) Rydb.", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "richardsonii", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Carl O. Grassl", "recordNumber": "249", "verbatimEventDate": "1936-08-04", "habitat": "Depth of Water: 2 ft. Bottom: floculent peat", "occurrenceRemarks": "[stipules coarsely fibrous]; C. M. Tarzwell (IFR)", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Barry", "municipality": "", "locality": "Mud Lake T3N, R10W, Sec. 17", "decimalLatitude": "42.63333", "decimalLongitude": "-85.5", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}