Answer the following question: Information:  - The Mississippi River is the chief river of the largest drainage system on the North American continent. Flowing entirely in the United States (although its drainage basin reaches into Canada), it rises in northern Minnesota and meanders slowly southwards for to the Mississippi River Delta at the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains all or parts of 31 U.S. states and 2 Canadian provinces between the Rocky and Appalachian Mountains. The Mississippi ranks as the fourth longest and fifteenth largest river in the world by discharge. The river either borders or passes through the states of Minnesota, Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, and Louisiana.  - United States President Abraham Lincoln was assassinated by John Wilkes Booth on Good Friday, April 14, 1865, while attending the play "Our American Cousin" at Ford's Theatre as the American Civil War was drawing to a close. The assassination occurred five days after the commander of the Confederate Army of Northern Virginia, General Robert E. Lee, surrendered to Lieutenant General Ulysses S. Grant and the Union Army of the Potomac.  - The Appalachian Mountains, often called the Appalachians, are a system of mountains in eastern North America. The Appalachians first formed roughly 480 million years ago during the Ordovician Period. It once reached elevations similar to those of the Alps and the Rocky Mountains before naturally occurring erosion. The Appalachian chain is a barrier to east-west travel, as it forms a series of alternating ridgelines and valleys oriented in opposition to most roads running east or west.  - Andrew Johnson (December 29, 1808 July 31, 1875) was the 17th President of the United States, serving from 1865 to 1869. Johnson became president as he was vice president at the time of the assassination of Abraham Lincoln. A Democrat who ran with Lincoln on the National Union ticket, Johnson came to office as the Civil War concluded. The new president favored quick restoration of the seceded states to the Union. His plans did not give protection to the former slaves, and he came into conflict with the Republican-dominated Congress, culminating in his impeachment by the House of Representatives. The first American president to be impeached, he was acquitted in the Senate by one vote.  - Tennessee ("Tanasi") is a state located in the southeastern region of the United States. Tennessee is the 36th largest and the 16th most populous of the 50 United States. Tennessee is bordered by Kentucky and Virginia to the north, North Carolina to the east, Georgia, Alabama, and Mississippi to the south, and Arkansas and Missouri to the west. The Appalachian Mountains dominate the eastern part of the state, and the Mississippi River forms the state's western border. Tennessee's capital and second largest city is Nashville, which has a population of 654,610. Memphis is the state's largest city, with a population of 655,770.  - Abraham Lincoln (February 12, 1809  April 15, 1865) was an American politician and lawyer who served as the 16th President of the United States from March 1861 until his assassination in April 1865. Lincoln led the United States through its Civil Warits bloodiest war and perhaps its greatest moral, constitutional, and political crisis. In doing so, he preserved the Union, abolished slavery, strengthened the federal government, and modernized the economy.  - The President of the United States (POTUS) is the elected head of state and head of government of the United States. The president directs the executive branch of the federal government and is the commander-in-chief of the United States Armed Forces.  - Edward Hazzard East ( October 1 , 1830 -- November 12 , 1904 ) was an American attorney , judge , and politician . He served as Secretary of State for the state of Tennessee from 1862 to 1865 , having been appointed by Andrew Johnson , the state 's military governor under the Union Army occupation during the Civil War . East briefly served as the state 's acting governor during the interim between Johnson 's inauguration as U.S. Vice President on March 4 , 1865 , and the inauguration of the state 's `` elected '' governor , William G. Brownlow , on April 5 , 1865 .    What entity does 'edward h. east' has the relation 'occupation' with?
Answer:
lawyer