Concepts: activity, cloud, lake, produce, villager
A: volcanic activity under meromictic lake produced a cloud of carbon dioxide that asphyxiated villagers
Q: Keywords: colour, riot, summer
What is a sentence that includes all these keywords?

A: the gardens are open all year and are a riot of colour during the spring and summer
Produce a sentence which mentions all of these concepts: cast, spell, witch

A witch casts a spell.
[Q]: Generate a sentence that includes all the following words: car, feature, model
[A]: automobile model was one of the classic cars featured near the entrance of show on saturday .
CONCEPTS: form, member, part

GEN: members formed part to fight the fires .
CONCEPTS: day, festival, instrument, perform

GEN:
folk rock artist performs in musical instrument during day of festival