Human: I've been trying to make a sourdough bread recipe, but I can't get the bread to rise properly. What am I doing wrong? Assistant: 
It is possible that you may not be allowing the bread enough time to rise or you may not be using active dry yeast that is still viable. Also, make sure that your water temperature is warm enough to help activate the yeast and proof the bread. Additionally, be sure that your sourdough starter is properly proofed and has adequate rising power for your recipe.