We speak of resources initially in place to include the total amount of oil which we believe is in the ground, the total amount of oil which is originally contained in the reservoir. Now, some of that will have already been produced, and so we speak of produced resources., that is the amount of oil which was originally in place, and we have taken out and utilized already. Some of the original resources in place, we believe that we will be able to produce commercially with a probability of 90, 50 or only 10 percent, and so these are reserves categorized into proven, probable and possible. In the end, there is also some resources that we may not have discovered yet, so these are speculative resources, non-discovered resources, resources \ that we believe may exist because we know of the sedimentary basins, we have some information about the sedimentary basins, and we can establish parallels, compare one basin with the experience that we have had in another basin, so sometimes we have drilled a very few wells in a given basin but we know that it is similar to a different basin, and we expect to be able to find oil in the same amount. So for example, this has been typical of the relationship between West Africa and Brazil because in the past, these two continents were joined. So when we discovered a lot of oil in the deep offshore of Brazil, companies, and experts, geologists, came to the conclusion that the same kind of oil must exist in West Africa, and sure enough discoveries followed. However until we have discovered, this was purely speculative, and so we cannot have any certainty about the existence of such resources. This is the case for the Arctic today for example, we believe that there is a lot of oil in the Arctic, but until now precious few wells have been drilled. Some discovery has taken place, but our knowledge in fact of the basin is still very rudimentary, and will need to wait a long time before we can speak of a reasonable estimate, not to speak proven reserves, but even possible reserves, or even good estimates of resources in place. Next, we have a slide that gives you an idea of the amount of resources, and proven reserves, and the amount of fossil fuels that we have already produced. We have the slide divided in three sections; one for oil, one for natural gas, and one for coal. For each one of these fossil sources of energy, we have three bars, there is a gray bar that measures the cumulative production to date. We have an orange bar which measures the extent of proven reserves, and we have a blue bar which measure the total recoverable, so it's not the total remaining resources in place, it's the total resources that we believe we are capable of recovering. So this may also change down the road because we may find new technology that allow us to recover more, in which case given the amount of oil originally in place, we will be able to recover more. Let's look at what the graph says for oil, you can see that they have already produced a significant amount of oil, an amount which is only marginally less than the amount of proven reserves that we recognize we have at the moment. However, the total recoverable resources is significantly larger than both what we have produced already until now, and significantly larger than proven reserves, it is equivalent to about 100 years of production at the level of 2013. When it comes to natural gas, what we have produced is significantly less than proved reserves, proved reserves are about double what we have produced so far, so we are more comfortable with gas. The amount of total remaining recoverable resources is also significantly larger., here we exceed 200 years, it's about 250 years of total remaining recoverable resources, so we certainly are not running out of natural gas for the moment. When it comes to coal, the situation is even more extreme because in the end, although we have been burning coal for much longer than either natural gas or oil, the percentage of coal that we have actually produced already is minor, relative to both our proved reserves. The proven reserves are sufficient for at least 100 years, actually a bit more than 100 years of production at the level of 2013. When it comes to total remaining recoverable resources, we can see that the amount of coal that we estimate will be recoverable is vast, is equal to 500 years of production at the level of 2013. So we certainly are not running out of coal, and coal a bit being the fossil fuel that has been in use for the longest time, remains the fundamental fossil fuel that is available to humankind. It's a pity that coal is also the major source of emissions, so there is a clear conflict in between the utilization of coal, and environmental objectives containing climate change. Nevertheless, it should be said that we are certainly not running out of coal and in fact not even natural gas anytime soon. For oil, it's certainly not something that will happen in the next 50 years.