CONCEPTS: note, study, take

GEN: students are shown taking notes and studying together .

CONCEPTS: frog, lily, sit

GEN: green frog sitting near the lilies

CONCEPTS: deck, helicopter, supply

GEN: a helicopter carries supplies from ship to the flight deck during a replenishment .

CONCEPTS: cell, increase, number

GEN:
but at higher f you have also to increase the number of cells .