You are given a sentence and your task is to generate another sentence that supports the given input.

[EX Q]: Pedigrees use a standardized set of symbols, squares represent males and circles represent females.
[EX A]: In a pedigree chart the squares shape symbolizes males.

[EX Q]: The light travel time for the most distant visible galaxies is several billion years, comparable to the age of the universe, so by studying distant galaxies we are also looking back in time.
[EX A]: Due to the time it takes for light to reach us, galaxies at the edge of the universe are distant in terms of space and time.

[EX Q]: Electromagnetic waves (X-rays, light, radio, radar and TV waves) are examples of transverse waves formed by electric and magnetic fields vibrating together at right angles to the wave's motion.
[EX A]:
Because the fields that make up an electromagnetic wave are at right angles to each other and to the direction that the wave travels, an electromagnetic wave is considered a(n) transverse wave.