This thread is resolved. Here is a description of the problem and solution.
Problem:Assign all the contents related to a language to a different one
Solution:there are 2 ways you can "assign" the translations to another language.
1. Use the batch duplication feature through WPML Translation Management
go to WPML->Translation Managmeent -> select the pages/posts and duplicate to the new language.
2. Go to Pages->Edit page (make sure its through the WP Editor) -> on the right of the page you can change the language of this page.
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