Who has the sole power to try officials who have been impeached

Johnson became the first presidentimpeached by the House, but he was later acquitted by the Senate by one vote. The Constitution gives the House of Representatives the sole power to impeach an official, and it makes the Senate the sole court for impeachment trials.

can you explain it better

sir frederic attributed inaccuracies to schemas. memory reconstruction is one part actual events and one part personal schema, which can result in inaccuracies when memories are reconstructed.