You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

The Inheritance Cycle is a series of fantasy books written by Christopher Paolini.
Solution: The Inheritance Cycle is a tetralogy of young adult high fantasy novels written by American author Christopher Paolini.
Why? The output sentence elaborates on the input sentence without changing its general meaning e.g. "tetralogy of young adult high fantasy novels".

New input: But when the government has a strong prime minister the foreign minister may be may not determine policy himself .
Solution:
In a classic parliamentary system , a foreign minister can potentially exert significant influence in forming foreign policy but when the government is dominated by a strong prime minister the foreign minister may be limited to playing a more marginal or subsidiary role in determining policy .