Premise: And if he sometimes wandered into whimsy--that alluring comic swamp--and even farther, into mawkish sentimentality with Happiness Is a Warm Puppy, he more often executed that most difficult comic turn, being simultaneously funny and sweet.

Hypothesis: He could sometimes be whimsical, but he was more often executing the difficult comic turn of being both funny and sweet at the same time.
Relation: entailment