Assertion: jerusalem artichoke's flower | /r/HasProperty | ray flowers
Facets:
Source sentences:
text: The bright yellow flower heads of the Jerusalem artichoke are only about 2 inches in diameter and contain 8 to 20 outer yellow flowers (ray flowers) that enclose the dark yellowish-brown center.
text: Each flower head is approximately 2 inches in diameter and contains 8 to 20 outer yellow flowers (ray flowers) that enclose the dark yellow to brown disk flowers.