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": ""}
 i ->  "Assoc.: emna trisulca, Spirodela polyrhiza, Ulmus amer. Ceratophyllu demer., Cxephalanthus"    K potamogeton zosteriformis Calhoun      1994-07-25 Z      UNITED STATES  bwAL    5 Inundated shub swamp; growing in 6dm water in shade of elm, slightly marly sand. Common. Completely submerged.   .AnPw steven p. grund        -85.28004 6e    
{"catalogNumber": "", "order": "", "family": "", "scientificName": "Potamogeton zosteriformis", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Steven P. Grund", "recordNumber": "", "verbatimEventDate": "1994-07-25", "habitat": "Inundated shrub swamp; growing in 6dm water in shade of elm, slightly marly sand. Common. Completely submerged.", "occurrenceRemarks": "\"Assoc.: Lemna trisulca, Spirodela polyrhiza, Ulmus amer. Ceratophyllum demer., Cephalanthus\"", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Calhoun", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-85.28004", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}