An Irish folk hero stands tall in CPT's Open Mind Firmament...by Christine Howey...Asked to describe an apple, most of us would come up with "red" and "round." Ask a poet like William Butler Yeats the same question and he'd respond with something completely different. For poets, the truth is fractured, complex, and lies beyond the commonplace. This is why Open Mind Firmament, an Evening of W.B. Yeats at Cleveland Public Theatre can be stunning, confounding, and revealing — often at the same time. Adapted and directed by Raymond Bobgan, CPT's artistic director,…...