Were Grendel's mother and Hygelac characters in Beowulf?
ASK WHERE { wd:Q48328 wdt:P674 wd:Q2361245 . wd:Q48328 wdt:P674 wd:Q889694 }
beowulf: Q48328 grendel's mother: Q2361245 beowulf: Q48328 hygelac: Q889694