An opening act, warm-up act, or supporting act is an entertainment act (musical, comedic, or otherwise), that performs at a concert before the featured act, or "headliner". Rarely, an opening act may perform again at the end of the event, or perform with the featured act after both have had a set to themselves.
An opening act is a musical act.
A: It's impossible to say

David Halberstam (April 10, 1934 April 23, 2007) was an American journalist and historian, known for his work on the Vietnam War, politics, history, the Civil Rights Movement, business, media, American culture, and later, sports journalism. He won a Pulitzer Prize for International Reporting in 1964. In 2007, while doing research for a book, Halberstam was killed in a car crash.
David Halberstam had ambitions of writing additional historical works prior to being killed in an automobile accident.
A: It's impossible to say

The 1999 Acura Classic Doubles was the doubles event of the twentieth edition of the third tournament in the US Open Series. Martina Hingis and Natasha Zvereva were the defending champions but Hingis did not compete this year. Zvereva played with Mary Pierce, and they were defeated in the first time by Cara Black and Irina Selyutina.
Natasha cheated in the event
A:
It's impossible to say