With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Joseph Gordon-Levitt was unsuccessful in getting the main role the Snowden biopic.
text_B: An artist 's portfolio is an edited collection of their best artwork intended to showcase an artist 's style or method of work .. A portfolio is used by artists to show employers their versatility by showing different samples of current work .. Typically , the work reflects an artist 's best work or a depth in one specific area of work .. Historically , portfolios were printed out and placed into a book .. With the increased use of the internet and email , however , there are now websites that host online portfolios that are available to a wider audience .. Sometimes an artist 's portfolio can be referred to as a lookbook .. lookbook. lookbook
not_related.