Modifiers

A0 label

A0 label in most cases appear as an AGENT as a relation to the predicate. Examples:

sell-v -> seller
buy-v -> buyer
give-v -> giver

In this case, one (possibly two) instances will be created.

1. Instance of an AGENT node, that will have a link to the predicate in m_predicate map, and
2. (if needed) Instance of a predicate label (if has not been created before) that will have a link to the AGENT node in the m_arguments map.

Also, based on the POS tag, appropriate attributes if necessary will be added to the m_attrbutes Map in the AGENT instance.

A4 label

A4 label describes beneficiary/Benefactive relation. Examples:

sell-v -> (GOL) Benefactive buy-v -> (GOL) benefactive

In this case, one (possibly two) instances will be created.

1. Instance of an Beneficiary node, that will have a link to the predicate in m_predicate map. Here, the node that has an A4's label does not necessarily be the instance (the whole subtree has to be parsed, and dobj has to be found, which most likely will be the argument), and
2. (if needed) Instance of a predicate label (if has not been created before) that will have a link to the AGENT node in the m_arguments map.