You will be given a definition of a task first, then some input of the task.
Given two noun phrases (arguments) and relationship between them, form a sentence that expresses theses arguments with the given relationship.

Relationship: 'be bear in', Argument/Subject 1: 'christ', Argument/Subject 2: 'bethlehem of judea'
Output:
The traditional Western and Christian-based BC and AD designations are based upon the measurement of time before Jesus Christ was born in Bethlehem of Judea , while the AD , or Anno Domini designation is a Latin phrase , meaning , in the year of our Lord .