from typing import Sequence
import random


def random_english_resource_type_combo(
    english_resource_type_combos: Sequence[Sequence[str]],
) -> Sequence[str]:
    """
    A random choice of one set of all possible English resource type
    combination sets, e.g., ulb-wa, tn-wa, tw-wa; or, ulb-wa, tn-wa,
    tw-wa; or ulb-wa, tn-wa, tq-wa, tw-wa; etc..
    """
    return random.choice(english_resource_type_combos)