Bootstrapping relation training data

A system comprising:

• a memory having computer readable instructions;
• and
• one or more processors for executing the computer readable instructions, the computer readable instructions controlling the one or more processors to perform operations comprising:
• traversing, by a processor for a first instance, a corpus to detect a first passage having a first set of co-occurring entities and intervening tokens associated with a desired relation type;
• identifying, by the processor, a first predicate frame of the first passage based on the co-occurring entities and intervening tokens;
• traversing, by the processor for a second instance, the corpus to detect a second passage having a second predicate frame with a same semantic structure as the first predicate frame, wherein the passage contains a second set of co-occurring entities associated with the desired relation type during first instance that the processor did not detect during the first instance;
• detecting, by the processor, a second set of co-occurring entities in the second passage based on the second predicate frame;
• and
• annotating, by the processor, the second set of co-occurring entities to have a same desired relation type as the first set of co-occurring entities.

A computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to perform operations comprising:

• traversing, by a processor for a first instance, a corpus to detect a first passage having a first set of co-occurring entities and intervening tokens associated with a desired relation type;
• identifying, by the processor, a first predicate frame of the first passage based on the co-occurring entities and intervening tokens;
• traversing, by the processor for a second instance, the corpus to detect a second passage having a second predicate frame with a same semantic structure as the first predicate frame, wherein the passage contains a second set of co-occurring entities associated with the desired relation type during first instance that the processor did not detect during the first instance;
• detecting, by the processor, a second set of co-occurring entities in the second passage based on the second predicate frame;
• and
• annotating, by the processor, the second set of co-occurring entities to have a same desired relation type as the first set of co-occurring entities.