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": ""}
1413920 J4   eragrostis H&Z]    P M 6602  Zr poales (PURSH) STEUD. do  spectabilis y+Bt?  Canada  aO        anton a. reznicek H7/`      eragrostis spectabilis sj`m4   Poaceae H3?#     1981-09-20  ? 
{"catalogNumber": "1413920", "order": "Poales", "family": "Poaceae", "scientificName": "Eragrostis spectabilis", "scientificNameAuthorship": "(Pursh) Steud.", "genus": "Eragrostis", "subgenus": "", "specificEpithet": "spectabilis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Anton A. Reznicek", "recordNumber": "6602", "verbatimEventDate": "1981-09-20", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Canada", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}