Assertion: blizzard | /r/CapableOf | mark the release of hearthstone
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Source sentences:
text: To mark the release of Hearthstone, Blizzard released the Hearthsteed mount for World of Warcraft players that is obtained by winning three games in Arena or Play mode.
text: To mark the release of Hearthstone, Blizzard released the Hearthsteed mount for World of Warcraft players.