T_DURING(INTERVAL(starts_at, ends_at), INTERVAL('2017-06-10T07:30:00Z', '2017-06-11T10:30:00Z'))
t_during(INTERVAL(starts_at,ends_at), INTERVAL('2017-06-10T07:30:00Z','2017-06-11T10:30:00Z'))
{"op":"t_during","args":[{"interval":[{"property":"starts_at"},{"property":"ends_at"}]},{"interval":["2017-06-10T07:30:00Z","2017-06-11T10:30:00Z"]}]}