Assertion: coneflower's flower | /r/HasProperty | rich source of nectar
Facets:
Source sentences:
text: Flowers being a rich source of nectar attract butterflies and bees which are the main pollinators of the plant.
text: Flowers are rich source of nectar which attracts bees and butterflies, main pollinators of this plant.
text: Colorful flowers are rich source of nectar which attracts bees, butterflies and wasps that play important role in the pollination of this plant.