def format_tb(tb, limit = None):
    return format_list(extract_tb(tb, limit))
Yields the first chunk in the prepositional noun phrase, usually a PP-chunk.
dataset/ETHPy150Open babble/babble/include/jython/Lib/traceback.py/format_tb--crossover with--dataset/ETHPy150Open markuskiller/textblob-de/textblob_de/ext/_pattern/text/tree.py/PNPChunk.preposition