CONCEPTS: choose, home, sofa

GEN: how to choose the best sofa for your home

CONCEPTS: look, progress, tunnel

GEN: you are looking north at progress on the upper deck of the tunnel .

CONCEPTS: build, ceremony, explode

GEN: fireworks explode over building function during opening ceremony .

CONCEPTS: come, face, smile

GEN:
Someone's face comes close and a smile passes across his face.