You will be given a definition of a task first, then some input of the task.
This task involves annotating the answer type to a given question that involve some kind of complex reasoning (including numerical reasoning). Note that the questions require looking at more than one part of the passage to answer. There are 3 possible answer types (i) spans, (ii) numbers and (iii) dates. If the answer can be found in the passage, label it as "span". If the answer is a number, label as "number". Similarly, label "date" if you think the answer to the given question is a date.

Passage: History Ireland is a magazine with a focus on the history of Ireland rather than archaeology. The first issue of the magazine appeared in Spring 1993. It went full-colour in 2004 and since 2005 it is published bi-monthly. It features articles by a range of writers and book reviews. The magazine's editor is Tommy Graham of the Tisch School of the Arts, New York University, Dublin Programme. In 2017, the magazine attracted significant online criticism for publishing an allegedly defamatory letter about historian Liam Hogan and his work on the Irish slave myth. In September 2017, the magazine's editor issued a formal apology to Hogan.
Question: How many years did it take from first issue of the magazine for it to be published in color?
Output:
number