Given the task definition and input, reply with output. In this task, you have to identify the named entities (NER) which are the ingredients required given its directions. Named entities are the names of the items without their quantity.

Mix yeast and 1/2 cup warm water; mix well., Beat egg; add to yeast mixture; set aside., In large bowl, add 1 cup water, salt, sugar and oil together., Mix well, adding flour 1 cup at a time until mixture is bouncy and not sticky., Let rise 1 1/2 hours in a warm place, then punch down., Before baking, make out rolls and let rise 2 hours., Bake at 410 for 12 minutes., Brush top with melted butter.
water, yeast, egg, salt, sugar, oil, flour