The role was established by 1380 and may have existed before that.

In many a field its role has either already been established, or it is eagerly expected.

But the role of the wake in the crash has not been established.

The role was first established in the 12th Century.

The roles of women in Thailand's national development has not yet been fully established.

Their causative role has been established in some of these diseases but not all.

Their roles were established, and they played them well.

However, its role in influencing these rhythms - let alone actually being responsible for them - is not at all established.

The roles of the various castes in the festival are however well established.

Although it was not always so, the role of the state in the protection of children is now firmly established.