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": ""}
Ambrosia artemisiifolia slu    WASHTENAW r&Q8   uivdJ Asteraceae  e PF4 ASTERALES   721 mount pleasant avenue, near incinerator, ann arbor,*   j WEED ON HOUSELOT,   YhUnited States   1249623 7CtbF!  artemisiifolia 1     V l. WARREN H. WAGNER, JR.    michigan X= X  8353  -u7m   AMBROSIA X  1956-08-18  1~73   
{"catalogNumber": "1249623", "order": "Asterales", "family": "Asteraceae", "scientificName": "Ambrosia artemisiifolia", "scientificNameAuthorship": "L.", "genus": "Ambrosia", "subgenus": "", "specificEpithet": "artemisiifolia", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Warren H. Wagner, Jr.", "recordNumber": "8353", "verbatimEventDate": "1956-08-18", "habitat": "Weed on houselot,", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Washtenaw", "municipality": "", "locality": "721 Mount Pleasant Avenue, near incinerator, Ann Arbor,", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}