By Merilyn Jackson
For The Inquirer
In the Philadelphia/Washington D.C. Exchange concert over the weekend, Anne-Marie Mulgrew and Dancers Company joined with D.C.’s Human Landscape Dance, each presenting two works representative of their companies. Both have a reputation for working in site-specific arenas, each well-known for using parks, walls, even city sidewalks to create a mise-en-scene. In this case they brought their works to the Painted Bride stage, with some mixed results.