def load_data_single_split()

in datasets.py [0:0]


    def load_data_single_split(self, split: str, seed: int = None) -> List[InputExample]:
        """
        Load data for a single split (train, dev, or test).
        """
        examples = []
        name = self.name if self.data_name is None else self.data_name
        file_path = os.path.join(self.data_dir(), f'{name}_{split}.json')

        with open(file_path, 'r') as f:
            data = json.load(f)
            logging.info(f"Loaded {len(data)} sentences for split {split} of {self.name}")

            for i, x in enumerate(data):
                num_triggers = x['triggers']
                for trigger_id in range(min(1, len(num_triggers))):
                    entities = [
                        Entity(id=j, type=self.entity_types[y['type']], start=y['start'], end=y['end'])
                        for j, y in enumerate(x['entities'])
                    ]

                    triggers = [
                        Entity(id=j, type=self.entity_types[y['type']], start=y['start'], end=y['end'])
                        for j, y in enumerate(x['triggers'][trigger_id:trigger_id+1]) if len(x['triggers']) > 0
                    ]
                    assert len(triggers) <= 1, 'no more than 1 trigger'

                    relations = [
                        # here we take the trigger as the tail entity of the relation
                        Relation(
                            type=self.relation_types[y['type']], head=entities[y['head']], tail=triggers[y['tail']]
                        )
                        for y in x['relations'] if y['tail'] == trigger_id and len(num_triggers) > 0
                    ]
                    tokens = x['tokens']

                    example = InputExample(
                        id=f'{split}-{i}',
                        tokens=tokens,
                        entities=entities,
                        triggers=triggers,
                        relations=relations,
                    )

                    examples.append(example)

        return examples