Assertion: chestnut | /r/HasProperty | natural disaster of sorts
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text: Of all the trees that the nursery – now run by Wallace and his son Iain – grows and sells, the chestnut is perhaps the most important since the native species was virtually wiped out by an accidentally introduced fungus driven blight in the early 1900s, a natural disaster of sorts that the late Dr. Dunstan played a key role in resolving.