{"https://codexery.com/invertebrates/e/part-1/echinoderm/": {"t": "echinoderm", "s": ""}, "https://codexery.com/marine-invertebrates/e/part-1/sea-urchin/": {"t": "sea-urchin", "s": ""}, "https://codexery.com/marine-invertebrates/e/part-1/sand-dollar/": {"t": "sand-dollar", "s": ""}}