Sentence:  This book has a few factual <WSD>inaccuracies</WSD>, but only because of the limits of contemporary knowledge. For instance, at the time of writing, Ribbon Falls was thought to be the highest waterfall in the world; today we know that Angel Falls in Venezuela has this distinction. 
Meaning of the word marked with <WSD> tags:  A statement, passage etc. that is inaccurate or false.