Premise: A Clash of Kings is the second novel in A Song of Ice and Fire , an epic fantasy series by American author George R. R. Martin expected to consist of seven volumes . Cersei Lannister . She subsequently appeared in A Clash of Kings ( 1998 ) and A Storm of Swords ( 2000 ) .
Hypothesis: Cersei Lannister is in a book series.
Label: ENTAILMENT