Complex sentence: Sansa Stark (Sophie Turner) arrives at the Wall and reunites with Jon Snow (Kit Harington), they later receive a message from Ramsay Bolton (Iwan Rheon) challenging Jon to come take back Winterfell and rescue Rickon Stark.
Split into simpler sentences: Sansa Stark (Sophie Turner) arrives at the Wall and reunites with Jon Snow (Kit Harington). They later receive a message from Ramsay Bolton (Iwan Rheon) challenging Jon to come take back Winterfell and rescue Rickon Stark.