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": ""}
     ROCKWALL +f   3 1/4 AIRLINE MILES NORTHWEST OF ROCKWALL. e3   =FM texas  euphorbia serpens S<1x   WI)K united states     1946-10-22 x    Euphorbia rz M5   A * Malpighiales frequent in open spaces in river bottom land. 8dx1j    stems prostra7e, rooting at n0des, up to 3 dm. long. P#Hu  52532 `  
{"catalogNumber": "", "order": "Malpighiales", "family": "", "scientificName": "Euphorbia serpens", "scientificNameAuthorship": "", "genus": "Euphorbia", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "52532", "verbatimEventDate": "1946-10-22", "habitat": "Frequent in open spaces in river bottom land.", "occurrenceRemarks": "Stems prostrate, rooting at nodes, up to 3 dm. long.", "associatedTaxa": "", "country": "United States", "stateProvince": "Texas", "county": "Rockwall", "municipality": "", "locality": "3 1/4 airline miles northwest of Rockwall.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}