In 2006, Jian Li, a Chinese undergraduate at Yale University, filed a civil rights complaint with the Office for Civil Rights against Princeton University, claiming that his race played a role in their decision to reject his application for admission and seeking the suspension of federal financial assistance to the university until it "discontinues discrimination against Asian Americans in all forms" by eliminating race and legacy preferences. Princeton Dean of Admissions Janet Rapelye responded to the claims in the November 30, 2006, issue of the Daily Princetonian by stating that "the numbers don't indicate [discrimination]." She said that Li was not admitted because "many others had far better qualifications." Li's extracurricular activities were described as "not all that outstanding". Li countered in an email, saying that his placement on the waitlist undermines Rapelye's claim. "Princeton had initially waitlisted my application," Li said. "So if it were not for a yield which was higher than expected, the admissions office very well may have admitted a candidate whose "outside activities were not all that outstanding".
Try to answer this question if possible (otherwise reply "unanswerable"):  With which organization did Li not file a civil rights complaint?
unanswerable