Direct answer
Objectives follow journal display order. Some depend on your choices; follow the active objective in the game.
Result
Geralt can hardly spend a day in even the most seemingly idyllic village without being asked to kill a monster, so it should come as no surprise such requests came to him in Novigrad as well. On one occasion he was asked to clean a warehouse of nekkers. The two owners - a man and a dwarf - blamed each other for attracting the monsters there in a plot to gain sole control over the building.