Anchor: Several people met in a session, some with computers, some needing stand.
Entailed: A group of people are engaged with each other.
Contradiction: The people are playing volleyball.
Contradiction: Two men leave the park.
Contradiction: A woman is shopping.
Contradiction: Nobody could tell exactly what she had been up to the past month.
Contradiction: You know how many gallons you need, but not necessarily how many liters.