Question: The forces of Olaf Guthfrithson were defeated by the English led by Æthelstan at a battle fought in which year ?
Sentence (from "Harald Sigtryggsson"): Harald Sigtryggsson (Old Irish: "Aralt mac Sitric" ; Old Norse: "Haraldr" , died 940) was a Viking leader who ruled Limerick in the early 10th century.
Relevant evidence: No