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@@version
5.6.47
json_result
{"John (20)": {["2020-01-01", 5.0], ["2029-10-13", 0.7], ["2020-01-22", 4.0]}, "John (26)": {["2019-02-26", 1.8]}, "Peter (21)": {["2020-01-02", 6.5], ["2020-02-01", 41.7]}, "Peter (47)": {["2020-01-18", 11.3]}}