To draw attention to the crisis, they called upon experienced photojournalists to visit seven countries, from war zones to impoverished regions to emerging economies, to create the multimedia series "Starved for Attention".
They counter: "Give us an estimate!" And the engineers gather their wits, call upon their experience, contemplate the entrails of farm animals, throw darts at a board adorned with client/manager/executive faces, and return a random number.
While Ritchie was able to call upon his experience in the broadcasting industry and other sports, as well as a fresh approach to rugby administration having only joined the RFU at the start of 2012, Beaumont - a former England captain and a highly respected figure in the game - used his stature to good effect when heading up many of the meetings in his guise as chairman of the Six Nations.
To prepare for the part, he called upon his experience playing something else entirely – a giraffe.
In a recent Senate debate, Mr. Lugar of Indiana called upon his experience as a corn farmer, as he often does, to explain why he thought farmers already received generous protection against adversity through the subsidy program.
When recently faced with finding an efficient approach to the problems of dying papers products in 50 different colours, engineers at SAAPI Adamis Mill in Port Elizabeth, South Africa, called upon the experience of process pump and systems manufacturer Bran + Luebbe.
Kasich calls upon his experience on the Defense Committee in response.
Gratzner spoke off-stage about his approach to directing the short, which called upon his experience in theater.
"Tom will call upon his extensive experience in the areas of finance and risk as well as his broad industry background," UBS's chief executive, Oswald J. Grubel, said.
Drawing upon points made in the previous section, gender-transformative programmes often call upon men who experience intensive and cumulative economic and social disempowerment to press towards the democratisation of gender relations between women and men.
Waiting to be called upon again.
