CONCEPTS: take, toll, year

GEN: years of boxing took a toll on face .

CONCEPTS: affect, arthritis, knee

GEN: how arthritis can affect side of the knee .

CONCEPTS: complete, liberty, statue, surround, worker

GEN: the statue of liberty surrounded by scaffolding as workers complete the final stages .

CONCEPTS: harvest, harvester, maize

GEN:
a combine harvester harvests a field of maize