Premise: Three people are sitting sipping drinks in a lobby, while other people are behind them talking.

Hypothesis: There were a number of people standing behind the trio of people sipping their drinks.
Relation: entailment

Hypothesis: Three young ladies sat innocently in the lobby sipping their vanilla milkshakes, while a host of dashing young men whispered behind them.
Relation: neutral

Hypothesis: The three people sat sipping drinks, their toes digging in the warm beach sand.
Relation: contradiction