Assertion: optimism | /r/HasProperty | factor
Facets:
value: in living a longer life
type: PURPOSE
Source sentences:
text: Over the next decade, as the majority of study participants reach the end of their lives, researchers will hopefully be able to learn if optimism is a factor in living a longer life in addition to leading to a healthier one.
text: So optimism is one of the factors that can be targeted.