I have a test where I am given the following article, what is an answer for the question: What is the stage name of the person who attended the Convent of the Sacred Heart at age 11? ?

Stefani Joanne Angelina Germanotta was born on March 28, 1986 at Lenox Hill Hospital in Manhattan, New York City, to a Catholic family. Her parents both have Italian ancestry; she also has more distant French-Canadian roots. Her parents are Cynthia Louise (née Bissett) and Internet entrepreneur Joseph Germanotta, and she has a younger sister, Natali. Brought up in the Upper West Side of Manhattan, Gaga says that her parents came from lower-class families and worked hard for everything. From age 11, she attended the Convent of the Sacred Heart, a private all-girls Roman Catholic school. Gaga described her high school self as "very dedicated, very studious, very disciplined" but also "a bit insecure". She considered herself a misfit and was mocked for "being either too provocative or too eccentric".Gaga began playing the piano at age four when her mother insisted she become "a cultured young woman". She took piano lessons and practiced through her childhood. The lessons taught her to create music by ear, which she preferred over reading sheet music. Her parents encouraged her to pursue music, and enrolled her in Creative Arts Camp. As a teenager, she played at open mic nights. Gaga played the lead roles of Adelaide in Guys and Dolls and Philia in A Funny Thing Happened on the Way to the Forum at a nearby boys' high school. She also studied method acting at the Lee Strasberg Theatre and Film Institute for ten years. Gaga unsuccessfully auditioned for New York shows, though she did appear in a small role as a high school student in a 2001 episode of The Sopranos titled "The Telltale Moozadell". She later said of her inclination towards music:
I don't know exactly where my affinity for music comes from, but it is the thing that comes easiest to me. When I was like three years old, I may have been even younger, my mom always tells this really embarrassing story of me propping myself up and playing the keys like this because I was too young and short to get all the way up there. Just go like this on the low end of...

Gaga