"почалися" meaning in Ukrainian

{
  "forms": [
    {
      "form": "почали́ся",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "počalýsja",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "uk",
        "2": "verb form",
        "head": "почали́ся"
      },
      "expansion": "почали́ся • (počalýsja)",
      "name": "head"
    }
  ],
  "lang": "Ukrainian",
  "lang_code": "uk",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Ukrainian entries with incorrect language header",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "extra": "počátysja",
          "word": "поча́тися pf"
        }
      ],
      "glosses": [
        "plural past indicative of поча́тися pf (počátysja)"
      ],
      "id": "en-почалися-uk-verb-WNcxb5pB",
      "links": [
        [
          "поча́тися",
          "початися#Ukrainian"
        ]
      ],
      "related": [
        {
          "tags": [
            "alternative"
          ],
          "word": "почали́сь"
        }
      ],
      "tags": [
        "form-of",
        "indicative",
        "past",
        "plural"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[pɔt͡ʃɐˈɫɪsʲɐ]"
    }
  ],
  "word": "почалися"
}

{
  "forms": [
    {
      "form": "почали́ся",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "počalýsja",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "uk",
        "2": "verb form",
        "head": "почали́ся"
      },
      "expansion": "почали́ся • (počalýsja)",
      "name": "head"
    }
  ],
  "lang": "Ukrainian",
  "lang_code": "uk",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Ukrainian entries with incorrect language header",
        "Ukrainian non-lemma forms",
        "Ukrainian terms with IPA pronunciation",
        "Ukrainian verb forms"
      ],
      "form_of": [
        {
          "extra": "počátysja",
          "word": "поча́тися pf"
        }
      ],
      "glosses": [
        "plural past indicative of поча́тися pf (počátysja)"
      ],
      "links": [
        [
          "поча́тися",
          "початися#Ukrainian"
        ]
      ],
      "related": [
        {
          "tags": [
            "alternative"
          ],
          "word": "почали́сь"
        }
      ],
      "tags": [
        "form-of",
        "indicative",
        "past",
        "plural"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[pɔt͡ʃɐˈɫɪsʲɐ]"
    }
  ],
  "word": "почалися"
}