CONCEPTS: building, lead, staircase

GEN: circular staircase leads to the grand dining room in the building .

CONCEPTS: class, locomotive, station

GEN: steam locomotive no. of the class at station

CONCEPTS: disperse, seed, wind

GEN: seeds spill out onto a lower leaf to be dispersed by the wind .

CONCEPTS: cloud, lapse, rock

GEN:
time lapse from a rock over the town with clouds and blue sky