NEW YORK — Seventeen-year-old “Piano” prodigy Anna Paquin has joined Sean Connery and F. Murray Abraham in Gus Van Sant’s “Finding Forrester” for Columbia Pictures.Paquin will play the inter-racial love interest of a black high school basketball star/boy genius (Robert Brown). Pic is about Brown’s prep school relationship with Paquin and an older J.D. Salinger-type writer (Connery) who has never written a follow-up to his acclaimed first novel. Paquin is appearing in “X-Men” in July and the upcoming untitled Cameron Crowe film. She won a supporting actress Oscar at age 11 for her role opposite Holly Hunter in “The Piano.” She is repped by AMG and William Morris Agency.