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": ""}
 1418430 m  pilot knob, 1/2 mile est ot highway 183, ca. one mile south of onion creek !u6  Poaceae ~I?4   POALES .>H    texas  O^    s.n. 1)g     (TRIN. & RUPR.) POHL M Y      1954-04-05     UNITED STATES Kit9k   NASSELLA LEUCOTRICHA d  LEUCOTRICHA TMyZ   $z) TRAVIS   
{"catalogNumber": "1418430", "order": "Poales", "family": "Poaceae", "scientificName": "Nassella leucotricha", "scientificNameAuthorship": "(Trin. & Rupr.) Pohl", "genus": "", "subgenus": "", "specificEpithet": "leucotricha", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "s.n.", "verbatimEventDate": "1954-04-05", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Texas", "county": "Travis", "municipality": "", "locality": "Pilot Knob, 1/2 mile west of Highway 183, ca. one mile south of Onion Creek", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}