This is related to the symbols of alchemy, including the four elements of matter, as well as of metals that correspond to the planets in our solar system.
Last Wednesday, the final four elements on the seventh row of the periodic table – the ones with the atomic numbers 113, 115, 117, and 118 – were finally given names.
In her paper, she looks at a headline that says " Justin Bieber Baptized in New York City Bathtub." Task 1 would be to identify four elements: there's Justin Bieber, there's baptism, there's New York City, and there's a bathtub.