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": ""}
 &v K( ARACEAE  8%_ united states A RKANSAS Vf    e8ZX G. L. Webster & K. I. Miller   V SPIRODELA E. L~andolt ~,`  grassy lakex, near mcnab r]z.  (l.) schleid. whO7@     .  polyrhiza  t 4633  -u o  hempstead  %Kv   1952-08-05      qa`ZG MIXED WITH LMNA, WOLFFIA, AND W OLFFIELLA      1663060 f?a$  
{"catalogNumber": "1663060", "order": "", "family": "Araceae", "scientificName": "", "scientificNameAuthorship": "(L.) Schleid.", "genus": "Spirodela", "subgenus": "", "specificEpithet": "polyrhiza", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "E. Landolt", "recordedBy": "G. L. Webster & K. I. Miller", "recordNumber": "4633", "verbatimEventDate": "1952-08-05", "habitat": "Mixed with Lemna, Wolffia, and Wolffiella", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Arkansas", "county": "Hempstead", "municipality": "", "locality": "Grassy Lake, near McNab", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}