Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make a watermelon football cake [title] Assemble the ingredients and items needed for completing the project. [step] The items are listed below under " things you will need ". [title] Position the watermelon on a non-slip, flat surface.

Ending1: [step] Look at the watermelon shape. The watermelon should fit into a square, wedges, watermelon roll, or a box. Ending2: [step] It's better if you put the watermelon in a bed of ice water so that all of it forms a single surface. To do this, place the watermelon halves on top of a parchment-paper towel, so that none of them touch. Ending3: [step] A silicon mat makes a good choice. [title] Slice 2 of the sides lengthwise down the watermelon to expose a large watermelon surface on both sides. Ending4: [step] Place your fingers into the watermelon's mouth, feel the watermelon, look for any seeds, and grasp it between your thumb and finger. [title] Cut the watermelon in half, leaving a little space (around 2 g) at the middle.

Answer format: ending1/ending2/ending3/ending4