[{"ngram": "third millennium BC", "parent": "", "type": "NGRAM", "timeseries": [5.106836642454482e-08, 5.2156336494135756e-08, 5.082300624792424e-08, 4.8617551381572155e-08, 4.843550119712095e-08, 4.691010348421644e-08, 4.369375616875004e-08, 4.2525568082802627e-08, 3.825196083693884e-08, 3.775620958736324e-08, 4.089312127015481e-08, 4.140862966802875e-08, 4.384907294406405e-08, 4.5958692090104184e-08, 4.532369070529642e-08, 4.542391757971538e-08, 4.4799902708194036e-08, 4.2709352499059605e-08, 4.128121133817331e-08, 3.894872158127782e-08]}]