Complex sentence: The new building contains the Trumbull dining hall, common room, and library; a new dorm wing was constructed parallel to the originals; and a Master's House was also constructed in the northeast corner of the quadrangle.
Split into simpler sentences: The new building contains the Trumbull dining hall, common room, and library, and a new dorm wing was constructed parallel to the originals. A Master's House was also constructed in the northeast corner of the quadrangle.