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": ""}
"Plant prostrate. Assoc.: Ambrosia artem.; Setaria viridis; Echinochloa ~sp.; Eragrostis cil; Medicago lupulina" B     @`B& thomas d. trana 42.32794 @   -85.28586 ,     U L.   U1 1993-09-14   polygonaceae h  Old field; in gravel of road; full sun; slightly moist from overnight rain. Common. -  polygonum aviculare 28  CALHOUN 0`d     nnF aviculare       UNITED STATES  Pw_ 
{"catalogNumber": "", "order": "", "family": "Polygonaceae", "scientificName": "Polygonum aviculare", "scientificNameAuthorship": "L.", "genus": "", "subgenus": "", "specificEpithet": "aviculare", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Thomas D. Trana", "recordNumber": "", "verbatimEventDate": "1993-09-14", "habitat": "Old field; in gravel of road; full sun; slightly moist from overnight rain. Common.", "occurrenceRemarks": "\"Plant prostrate. Assoc.: Ambrosia artem.; Setaria viridis; Echinochloa sp.; Eragrostis cil; Medicago lupulina\"", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Calhoun", "municipality": "", "locality": "", "decimalLatitude": "42.32794", "decimalLongitude": "-85.28586", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}