Premise: optimism is merely a lack of information.

Hypothesis: optimism is merely a lack of realistic information.
Label: entailment

Hypothesis: optimism is merely a lack of true information.
Label: entailment

Hypothesis: optimism is merely a lack of information at all.
Label: entailment

Hypothesis: optimism is merely a lack of useful information.
Label: entailment

Hypothesis: optimism is merely a lack of significant information.
Label: entailment