You need to create one pdf file where place ERD on one page and its related logical model on next page. This means total 2 pages are required, that is 2 pages for 1 ERD and 1 page for 1 logical model.

A hospital may maintain many labs. A lab must be part one hospital. A hospital has many employees. Each employee may work for one hospital. A hospital may contain many beds. A bed must be contained in only one hospital. A lab performs one or more treatments. A treatment must be performed by only one lab. A bed may assign to one patient. A patient may be assigned to one bed. A doctor refers one or more patients or refers no patients. A patient is referred by only one doctor. A patient may consume many items or may consume no items. An item is consumed by one or more patients or may be consumed by no patients. An item is supplied by one or more suppliers. A supplier may supply one or more items or may supply no items. A doctor may write one or more orders or may write no orders. An order is written by one doctor. An order may consist of one or more items or no items. An item may be part of one or more orders or may be part of no orders. An order may consist of one or more treatments or no treatments. A treatment may be part of one or more orders. A doctor may complete one or more diagnoses. A diagnosis is completed for by one doctor.