On the exterior. i want you to talk about this cladding. what is the process to remove it? how difficult is it to go back to buildings, to identify which builds are affected and then strip them of this cladding? i think the decision of which buildings to be stripped of the cladding is straightforward. because we would know what materials were used in the buildings. and it is the case that the material is flammable, then they will decide to remove the cladding. now, the question whether it s easy to remove or not, i think it s not very difficult because these panels are not very heavy. and made of materials, so handling them is not too difficult. of course, the cladding is, say, ten-story high, then you ll have to take care that the persons removing the cladding, there has to be safety of people removing it. but i think as for the weight ....