Please answer the following question: Extract the answer to the following question from the movie plot. If the question isn't answerable, please output "Can't answer". Question: what does galen discover about valerian? Title: Dragonslayer Movie plot: Dragonslayer opens with a small group of villagers journeying to a lonely tower in a place called Cragganmore. This tower is home to a powerful and kindly old sorcerer named Ulrich (Sir Ralph Richardson). Ulrich's manservant, Hodge (Sydney Bromley) answers the knock and turns them away. He tells them he knows that the villagers have travelled far and are on urgent business but Ulrich will still not see them. One of the villagers asks the leader of the group, a young man named Valerian (Caitlin Clarke) what they will do now. From the villager, it is implied that Valerian is the one who was certain that they could turn to Ulrich for help with their problems and organized the small group to come to the tower.Valerian boldly steps forward and shouts out to Ulrich that he and his group will not leave the doorstep of the tower until they are heard. Glancing to his right, Valerian spots Ulrich's apprentice, Galen (Peter MacNicol) looking back at the group through a window. Galen goes to his master, who is in a magical trance, and rouses him from it, telling him they have visitors. Ulrich responds that he knows they are there, and that the business they have come on is truly dire. He then shares a bit of disturbing news with Galen: Ulrich has foreseen his own death.Valerian and his group are brought into the tower while Ulrich and Galen prepare to greet them. Ulrich and Galen talk as they attire themselves appropriately. Ulrich says his outfit is the same as that worn by his own master before he died, and he had once changed lead into gold, a feat Ulrich could never duplicate -- Galen would stand to inherit a fortune. Galen is disturbed by Ulrich's prattling, because he doesn't want to see his master die. But Ulrich says he welcomes it. His life as a sorcerer, he feels, has accomplished little. He asks Galen how his studies are going and if he truly still wishes to be a sorcerer. Galen says he wishes it more than anything.Ulrich and Galen appear before the villagers with a lot of pomp and circumstance that leaves...
A:
She has sewn dragon scales together to make a shield