2011/1 2011419 at Prospect Park: Ben Owen and Manfred Werder walking in 2 diagonals through Prospect Park, Brooklyn NY, April 19, 2011, 7-9pm, and realizing 2 works, Ben's 2 diagonals, for prospect park and Manfred's 2011/1. Ben Owen started walking at Park Circle, Manfred Werder at Grand Army Plaza.