Assertion: chess player's piece | /r/HasProperty | 1 king
Facets:
Source sentences:
text: Each player has 16 pieces: 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.
text: The pieces in each army include: 1 king – most important piece, and one of the weakest (until the endgame).