T_DURING(INTERVAL(starts_at, ends_at), INTERVAL('2005-01-10', '2010-02-10'))
t_during(INTERVAL(starts_at,ends_at), INTERVAL('2005-01-10','2010-02-10'))
{"op":"t_during","args":[{"interval":[{"property":"starts_at"},{"property":"ends_at"}]},{"interval":["2005-01-10","2010-02-10"]}]}