Concepts: day, overlook, tree
A: trees overlooking a lake on a sunny day .
Concepts: grow, pot, tree
A: growing in a pot under eastern cedar tree
Concepts: sea, silhouette, sunset, watch
A: silhouette of man and woman watching sunset by the sea
Concepts: activity, asphyxiate, cloud, lake, produce
A:
volcanic activity under meromictic lake produced a cloud of carbon dioxide that asphyxiated villagers