Assertion: european ash | /r/HasProperty | affected by the fungus
Facets:
Source sentences:
text: The European ash, Fraxinus excelsior, has been affected by the fungus Hymenoscyphus fraxineus, causing ash dieback in a large number of trees since the mid-1990s, particularly in eastern and northern Europe.
text: The European ash, Fraxinus excelsior, has been affected by the fungus which causes "ash dieback".