Some context: Mumia Abu-Jamal (born Wesley Cook; April 24, 1954) is an American political activist and journalist who became involved in black nationalism in the 1970s. He is a supporter of the MOVE Organization, and was also a member of the Black Panther Party until October 1970 but left the party and became a radio reporter, eventually becoming president of the Philadelphia Association of Black Journalists. He was convicted and sentenced to death in 1982 for the murder of Philadelphia police officer Daniel Faulkner. After numerous appeals, his sentence was commuted in 2011 to life imprisonment without parole.
After three hours of deliberations, the jury presented a unanimous guilty verdict. In the sentencing phase of the trial, Abu-Jamal read to the jury from a prepared statement. He was cross-examined about issues relevant to the assessment of his character by Joseph McGill, the prosecuting attorney. In his statement, Abu-Jamal criticized his attorney as a "legal trained lawyer" who was imposed on him against his will and who "knew he was inadequate to the task and chose to follow the directions of this black-robed conspirator, Albert Sabo, even if it meant ignoring my directions." He claimed that his rights had been "deceitfully stolen" from him by Sabo, particularly focusing on the denial of his request to receive defense assistance from non-attorney John Africa and being prevented from proceeding pro se. He quoted remarks of John Africa, and said: Does it matter whether a white man is charged with killing a black man or a black man is charged with killing a white man? As for justice when the prosecutor represents the Commonwealth the Judge represents the Commonwealth and the court-appointed lawyer is paid and supported by the Commonwealth, who follows the wishes of the defendant, the man charged with the crime? If the court-appointed lawyer ignores, or goes against the wishes of the man he is charged with representing, whose wishes does he follow? Who does he truly represent or work for? ... I am innocent of these charges that I have been charged of and convicted of and despite the connivance of Sabo, McGill and Jackson to deny me my so-called rights to represent myself, to assistance of my choice, to personally select a jury who is totally of my peers, to cross-examine witnesses, and to make both opening and closing arguments, I am still innocent of these charges. Abu-Jamal was sentenced to death by the unanimous decision of the jury. Amnesty International has objected to the introduction by the prosecution of statements from his youth at the time of sentencing. It also protested the politicization of the trial, noting a documented recent history in Philadelphia of police abuse and corruption including fabricated evidence and use of excessive force. Amnesty International concluded "that the proceedings used to convict and sentence Mumia Abu-Jamal to death were in violation of minimum international standards that govern fair trial procedures and the use of the death penalty."
why was he sentenced?
A: charged with killing

Some context: Zhang Heng (Chinese: Zhang Heng ; AD 78-139), formerly romanized as Chang Heng, was a Han Chinese polymath from Nanyang who lived during the Han dynasty. Educated in the capital cities of Luoyang and Chang'an, he achieved success as an astronomer, mathematician, scientist, engineer, inventor, geographer, cartographer, artist, poet, statesman, and literary scholar. Zhang Heng began his career as a minor civil servant in Nanyang. Eventually, he became Chief Astronomer, Prefect of the Majors for Official Carriages, and then Palace Attendant at the imperial court.
Zhang Heng is often credited with inventing the first odometer, an achievement also attributed to Archimedes (c. 287-212 BC) and Heron of Alexandria (fl. AD 10-70). Similar devices were used by the Roman and Han-Chinese empires at about the same period. By the 3rd century, the Chinese had termed the device the ji li gu che, or "li-recording drum carriage" (the modern measurement of li = 500 m/1640 ft). Ancient Chinese texts describe the mechanical carriage's functions; after one li was traversed, a mechanically driven wooden figure struck a drum, and after ten li had been covered, another wooden figure struck a gong or a bell with its mechanically operated arm. However, there is evidence to suggest that the invention of the odometer was a gradual process in Han Dynasty China that centered on the "huang men"--court people (i.e. eunuchs, palace officials, attendants and familiars, actors, acrobats, etc.) who followed the musical procession of the royal "drum-chariot". There is speculation that at some time during the 1st century BC the beating of drums and gongs was mechanically driven by the rotation of the road wheels. This might have actually been the design of Luoxia Hong (c. 110 BC), yet by at least 125 the mechanical odometer carriage was already known, as it was depicted in a mural of the Xiao Tang Shan Tomb. The south-pointing chariot was another mechanical device credited to Zhang Heng. It was a non-magnetic compass vehicle in the form of a two-wheeled chariot. Differential gears driven by the chariot's wheels allowed a wooden figurine (in the shape of a Chinese state minister) to constantly point to the south, hence its name. The Song Shu (c. AD 500 ) records that Zhang Heng re-invented it from a model used in the Zhou Dynasty era, but the violent collapse of the Han Dynasty unfortunately did not allow it to be preserved. Whether Zhang Heng invented it or not, Ma Jun (200-265) succeeded in creating the chariot in the following century.
Are there any other interesting aspects about this article?
A:
It was a non-magnetic compass vehicle in the form of a two-wheeled chariot.