Complex sentence: Red caps, for instance, appear on battlefields or other locations where human blood has been spilt in large amounts; dementors "grow like fungi" according to JK Rowling, in the foulest, darkest places.
Split into simpler sentences: Red caps, for instance, appear on battlefields or other locations where human blood has been spilled in large amounts. Dementors "grow like fungi," according to JK Rowling, in the foulest, darkest places.