sentence2_structure: Increasing the distance between the two magnets<>will cause<>a decrease in the force of attraction between two magnets
sentence1: With the existing magnet arrangement, a decrease of the emittance by a factor of two has been achieved by changing the quadrupole strengths.
sentence2: Increasing the distance between the two magnets will cause a decrease in the force of attraction between two magnets.
question: Which factor will cause a decrease in the force of attraction between two magnets?