Assertion: asterism's star | /r/HasProperty | deneb
Facets:
Source sentences:
text: The asterism is formed by five bright stars: Deneb, Sadr, Albireo, Rukh, and Gienah.
text: The three bright stars that mark the vertices of the Summer Triangle are Altair, Deneb, and Vega, the brightest stars in the constellations