Tirohia te wāhanga i raro nei, kātahi ka whakautu i te pātai i muri mai i te reo kotahi me te wāhanga:  Passage: He maha ngā rōpū i te wā kotahi he rōpū, he tauira hoki o ētahi atu hanganga pāngarau. I roto i te reo o te ariā kāwai, he ahanoa rōpū rātau i roto i tētahi kāwai, ko te tikanga he ahanoa rātau (arā, he tauira o tētahi atu hanganga pāngarau) e haere mai ana me ngā huringa (e kiia ana ko ngā morphisms) e whakaata ana i ngā kaupapa rōpū. Hei tauira, ko ia rōpū (e tautuhia ana i runga ake nei) he huinga hoki, nō reira he rōpū he ahanoa rōpū i roto i te kāwai o ngā huinga.  Pātai: He aha ia rōpū?
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