Given the task definition, example input & output, solve the new input case.
In this task, you are given concept set (with 3 to 5 concepts) that contain mentions of names of people, places, activities, or things. These concept sets reflect reasonable concept co-occurrences in everyday situations. All concepts given as input are separated by "#". Your job is to generate a sentence describing a day-to-day scene using all concepts from a given concept set.
Example: mountain#ski#skier
Output: Skier skis down the mountain
Generated sentence as output is based on all three concepts "mountain", "ski", and "skier" given in the concept set.

New input case for you: flow#forest#tree
Output:
stream in the forest flowing under a mossy tree