CONCEPTS: airplane, airport, night, runway

GEN: an airport at night with bright lights and airplanes landing and taking off on the runway

CONCEPTS: building, top, tower

GEN: water tower on top of a building

CONCEPTS: entertain, part, troop

GEN: The woman is part of a clown troop, entertaining children at a birthday party.

CONCEPTS: home, sign, visitor, welcome

GEN:
the sign welcomed visitors to the new home .