CONCEPTS: aircraft, fly, helicopter

GEN: helicopters flew over a fighter aircraft on the eve .

CONCEPTS: bear, shore, walk

GEN: polar bear walking on shore .

CONCEPTS: gathering, memorise, student, text, walk

GEN: a religious students walks inside mosque during the gathering for students who had successfully memorised religious text .

CONCEPTS: explode, festival, firework

GEN:
fireworks explode during music festival