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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def migrate_into_triple(belstr: str) -> str: """Migrate BEL1 assertion into BEL 2.0.0 SRO triple"""


    bo.ast = bel.lang.partialparse.get_ast_obj(belstr, "2.0.0")

    return migrate_ast(bo.ast).to_triple()