I suppose to some extent social inclusion is a dimension of it, but as Tim said, there's no single indicator in terms of poverty.
I mentioned two. I mentioned basic deprivation, which targets those most in need. Then you have relative poverty, which more than likely targets inequality, or illustrates inequality, or people who have fallen significantly behind the norm. They would not necessarily be experiencing serious deprivation, but they would not be able to keep up with the standard of living that people generally have, and they're clearly vulnerable as well. Some of this vulnerability is vulnerability shocks: when something major happens to them, or whatever, they are not able to contend with it. So they have to be supported.
In terms of social exclusion, then, that deals largely with the extent to which people are isolated by poverty. I'll just give you one concrete example, which might illustrate it for other age groups.
The child comes home to its mother, a lone parent maybe, and says, “My friends have invited me to a party.” The present for the party costs 20 euro. The mother has already set out her budget for the week. The child can't go to the party, or if she does go to the party with a present, the mother has problems with her budget. There are people who live in a very tight situation who can't avail themselves of going out for a night, who are isolated from friends and relations. There are older people who live apart. This is what social exclusion is: people don't participate in society. Maybe they don't vote. They don't get involved in community activities. There's a whole range of areas from which people are excluded. The core of that is poverty, but the impact is social exclusion.
In addition, there's a need for the type of community development that will provide people with that support and that access to living a better quality life than otherwise might be the case. So when you're looking at poverty, you have to bear in mind that whole dimension as well.
The European Union would say about us that we don't give enough focus to trying to meet the challenge of social exclusion as we do to meet the challenge of poverty in the traditional sense, and therefore we need to do more in that area as well. I think that's the point in that regard.
You need a number of measures of poverty, and each of them will tell you something important.