You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
American_Broadcasting_Company

Context:
Meanwhile, ABC News, which formed as a newly separate division, sought to become a global leader in television news. In 1977, Roone Arledge was named president of the new ABC News in addition to being president of ABC Sports. That same year, ABC launched a major expansion of its office facilities in New York City. The company first constructed a new 10-story building on land previously occupied by an abandoned warehouse on the corner of Columbus Avenue and West 66th Street; the facility that was built in its place is nicknamed "7 Lincoln Square" (although it is actually located at 149 Columbus Avenue). Meanwhile, a former parking lot, located at 30 West 67th Street, was transformed into an impressive 15-story building. Both buildings were completed in June 1979. WABC-TV moved its operations from offices at 77 West 66th Street to 149 Columbus Avenue, freeing up space for the ABC network to house some of its operations.

Question:
When was 7 Lincoln Square completed?

June 1979