Question: When was percy jackson and the lightning thief published?

Disambiguated questions and answers:
context: No context provided
question: When was percy jackson and the lightning thief first published as a hardcover?
short_answers: July 1, 2005

context: No context provided
question: When was percy jackson and the lightning thief first published as a paperback?
short_answers: April 1, 2006

context: "The Lightning Thief" was published in Chinese, Italian, Turkish, Danish, Croatian, Czech, Finnish, French, Dutch, German, Hebrew, Portuguese, Brazilian Portuguese, Polish, Indonesian, Serbian, Norwegian, Spanish, and Catalan. The French, German, and Spanish editions were published in 2006. The other translations of the book were published in 2008. The Icelandic publisher "Odinseye" released another edition in 2012. The novel is also on sale in Taiwan, published by Yuan Liou Publishing.
question: When was percy jackson and the lightning thief published in French, German, and Spanish?
short_answers: 2006
wikipage: The Lightning Thief

context: "The Lightning Thief" was published in Chinese, Italian, Turkish, Danish, Croatian, Czech, Finnish, French, Dutch, German, Hebrew, Portuguese, Brazilian Portuguese, Polish, Indonesian, Serbian, Norwegian, Spanish, and Catalan. The French, German, and Spanish editions were published in 2006. The other translations of the book were published in 2008. The Icelandic publisher "Odinseye" released another edition in 2012. The novel is also on sale in Taiwan, published by Yuan Liou Publishing.
question: When was percy jackson and the lightning thief published in Chinese, Italian, Turkish, Danish, Croatian, Czech, Finnish, Dutch, Hebrew, Portuguese, Brazilian Portuguese, Polish, Indonesian, Serbian, Norwegian, and Catalan?
short_answers: 2008
wikipage: The Lightning Thief

context: "The Lightning Thief" was published in Chinese, Italian, Turkish, Danish, Croatian, Czech, Finnish, French, Dutch, German, Hebrew, Portuguese, Brazilian Portuguese, Polish, Indonesian, Serbian, Norwegian, Spanish, and Catalan. The French, German, and Spanish editions were published in 2006. The other translations of the book were published in 2008. The Icelandic publisher "Odinseye" released another edition in 2012. The novel is also on sale in Taiwan, published by Yuan Liou Publishing.
question: When was percy jackson and the lightning thief published in Icelandic?
short_answers: 2012
wikipage: The Lightning Thief

Long answers:
knowledge: content: The Lightning Thief is a 2005 American-fantasy-adventure novel based on Greek mythology, the first young adult novel written by Rick Riordan in the Percy Jackson & the Olympians series. 
wikipage: he Lightning Thief is a 2005 American-fantasy-adventure novel based on Greek mythology, the first young adult novel written by Rick Riordan in the Percy Jackson & the Olympians series. 
long_answer: The Lightning Thief is a 2005 American fantasy adventure novel based on Greek mythology, the first young adult novel written by Rick Riordan in the Percy Jackson & the Olympians series. Percy Jackson and the Lightning Thief was first published as a hard cover on July 1, 2005. It was then published as paperback a year later on April 1, 2006, and that same year it came out in French, German and Spanish. In 2008 it was published in Chinese, Italian, Turkish, Danish, Croatian, Czech, Finnish, Dutch, Hebrew, Portuguese, Brazilian Portuguese, Polish, Indonesian, Serbian, Norwegian, and Catalan, and in 2012 Icelandic.