LOS ANGELES—The last of three gang members convicted of carrying out an armed robbery at a Beverly Hills restaurant, where one customer was struck by gunfire and a $500,000 watch was stolen from another diner, was sentenced on Feb. 28 to five years behind bars. Marquise A. Gardon, 41, pleaded guilty last year to conspiracy to interfere with commerce by robbery and using a firearm in a crime of violence, according to the U.S. Attorney’s Office. Co-defendants Khai McGhee, 18, and Malik L. Powell, 21, were previously each sentenced to 12 years in federal prison for their part in the robbery. Prosecutors said all three are documented gang members from South Los Angeles. The robbery occurred around 2:10 p.m. on March 4, 2021, at Il Pastaio, a celebrity hangout on North Canon Drive. Responding officers found a woman who had been wounded by gunfire. The victim, who was not the …