sentence: Earthworms have five pairs of hearts.
sentences_before: Earthworms have a long body. They look squishy and gushy and slimy, but they are not. They have tiny hairs called bristles. Earthworms have ringed segments. They have a saddle where it lays its eggs.
sentences_after: It has no thorax or abdomen.
concept_name: earthworm
headings: Earthworm Physical characteristics of an earthworm
categories: Basic English 850 words Annelids