CONCEPTS: fire, firefighter, say

GEN: firefighters said the cause of the fire remained under investigation .

CONCEPTS: audience, concert, hand

GEN: audience at the concert with hands up

CONCEPTS: mountain, reflect, sunrise

GEN: the warm colors of the sunrise are reflected in the clouds over mountain .

CONCEPTS: cover, table, tent

GEN:
the tents adequately cover the tables to protect people from the sunlight .