Premise: The bikers came around the corner very fast and it was a tight race with the blue biker in the lead.

Hypothesis: A group of people in a bike race for cash prizes.
Relation: neutral

Hypothesis: A group of people in a bike race.
Relation: entailment

Hypothesis: A biker has fallen off his bike as other racers try to avoid him.
Relation: contradiction

Hypothesis: A group of people having a swimming race inside a pool.
Relation: contradiction

Hypothesis: Bikers are racing.
Relation: entailment

Hypothesis: The bikers round the final lap of the championship race.
Relation: neutral