Instructions: In this task, you are given two sentences in the English language (Sentence 1 and Sentence 2). Your task is to identify the connecting word between the two sentences.
Input: Sentence 1:In simulations of solid systems , the strain field arising from any inhomogeneity in the system will be artificially truncated and modified by the periodic boundary . Sentence 2:Similarly , the wavelength of sound or shock waves and phonons in the system is limited by the box size .
Output:
similarly