"pö" meaning in Volapük

{
  "head_templates": [
    {
      "args": {
        "1": "vo",
        "2": "preposition"
      },
      "expansion": "pö",
      "name": "head"
    }
  ],
  "lang": "Volapük",
  "lang_code": "vo",
  "pos": "prep",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Volapük entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Volapük prepositions",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "Were there children at that party as well? Yes, I've seen hundreds of them there.",
          "ref": "1932, Arie de Jong, Leerboek der Wereldtaal, page 19:",
          "text": "Cils äbinons-li i pö zäl et? Si! elogob us tumis.",
          "type": "quote"
        }
      ],
      "glosses": [
        "at"
      ],
      "id": "en-pö-vo-prep-sda5G2fC",
      "links": [
        [
          "at",
          "at"
        ]
      ]
    }
  ],
  "word": "pö"
}

{
  "head_templates": [
    {
      "args": {
        "1": "vo",
        "2": "preposition"
      },
      "expansion": "pö",
      "name": "head"
    }
  ],
  "lang": "Volapük",
  "lang_code": "vo",
  "pos": "prep",
  "senses": [
    {
      "categories": [
        "Pages with 2 entries",
        "Pages with entries",
        "Volapük entries with incorrect language header",
        "Volapük lemmas",
        "Volapük prepositions",
        "Volapük terms with quotations"
      ],
      "examples": [
        {
          "english": "Were there children at that party as well? Yes, I've seen hundreds of them there.",
          "ref": "1932, Arie de Jong, Leerboek der Wereldtaal, page 19:",
          "text": "Cils äbinons-li i pö zäl et? Si! elogob us tumis.",
          "type": "quote"
        }
      ],
      "glosses": [
        "at"
      ],
      "links": [
        [
          "at",
          "at"
        ]
      ]
    }
  ],
  "word": "pö"
}