Assertion: optimism | /r/HasProperty | a thinking style
Facets:
Source sentences:
text: Optimism is a thinking style that can be learned, which means that pessimism can be unlearned!
text: Several researchers have come to the conclusion that optimism is a thinking style that can be learned.
text: Optimism is a thinking style that can be learned, which means that pessimism can be unlearned!