In this task, you're given a passage, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both passage and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the passage or linked information.

Passage: In 1999, Simonson returned to Marvel to write a Warlock series, which featured a character from her previous New Mutants run. That same year, she wrote a miniseries, Galactus the Devourer, in which Galactus died temporarily. In 2005, she wrote stories featuring Magnus, Robot Fighter for the publisher Ibooks, Inc. In 2007, Simonson wrote a one-shot starring Magik of the New Mutants as part of a four-issue event known as Mystic Arcana. In 2009, she wrote two issues of Marvel Adventures featuring Thor. The next year, she scripted the five-part limited series X-Factor Forever and reunited with June Brigman for a new Power Pack story in Girl Comics #3. Simonson also co-wrote the comic World of Warcraft, based on the multi-million player internet game, for Wildstorm, and a manga story, based in the Warcraft universe, for Tokyopop. In 2011, DC hired Louise Simonson to write DC Retroactive: Superman - The '90s, pencilled by her Man of Steel-collaborator Jon Bogdanove.
Link Information: June Brigman (born October 25, 1960) Answer: 39
What age was June Brigman when Simonson returned to Marvel to write a Warlock series?