Complex sentence: It was after Snadyha'runes made a visit and requested information which Ven'nedia refused to give that a Sharen force attacked the group and were subsequently killed by Kharla'ggen.
Split into simpler sentences: It was after Snadyha'runes made a visit and requested information which Ven'nedia refused to give. A Sharen force attacked the group and were subsequently killed by Kharla'ggen.