code: def __init__(self, x, y):
      self.x = x
      self.y = y
      assert self.x.size(0) == self.y.size(0)
  
file_path: ogb/examples/nodeproppred/papers100M/mlp.py
imports: import argparse
  from tqdm.auto import tqdm
  import torch
  import torch.nn.functional
  from torch.utils.data import Dataset, DataLoader
  from ogb.nodeproppred import Evaluator
  from logger import Logger
label_desc: Use image node_id 1 to create a new SimpleDataset object from inherited base classes: Dataset with example: obj = SimpleDataset(x, y)