code: def simple_data_type(self, tree):
      data_type = None
      array_type = None
      dimensions = []
  
      token = tree.children[0]
      if str.upper(token) == "BOOLEAN":
          data_type = ColumnType.BOOLEAN
  
      return data_type, array_type, dimensions
  
imports: from lark import Tree
  from evadb.catalog.catalog_type import ColumnType, NdArrayType, VectorStoreType
  from evadb.expression.tuple_value_expression import TupleValueExpression
  from evadb.parser.create_index_statement import CreateIndexStatement
  from evadb.parser.create_statement import ColConstraintInfo, ColumnDefinition, CreateDatabaseStatement, CreateJobStatement, CreateTableStatement
  from evadb.parser.table_ref import TableRef
  from evadb.parser.types import ColumnConstraintEnum
label_desc: Use image node_id 7 for calling the CreateTable obj's underlying member method code with example usage: obj.simple_data_type(tree) and returns: data_type,  array_type,  dimensions