 
 <prompt> Wetin dem dey call am wen heart dey decompose and e turn heartwood? Given di previous question, write one context wey get di answer. E fit be 1 - 20 sentences. Context: <response>: The word heartwood dey come from where e dey inside tree and no be say e dey important to the tree. E dey show say tree fit dey do well even if e heart don decay finish. Some kind trees dey start to form heartwood from small pikin stage, so dem get only small layer of live sapwood, while some other trees dey take time before dem change. Trees like chestnut, black locust, mulberry, osage-orange, and sassafras get small sapwood, while maple, ash, hickory, hackberry, beech, and pine get thick sapwood. Some other trees sef no dey form heartwood. 