Any elegant way to handle prepositions and articles in notifications

Configuration
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1

To make voice and text messages sound more natural, it is important that the grammar is flawless.
Unfortunately, I haven’t yet found an elegant way to have my location notifications phrase out into complete sentences.

So far I maintain a monster of a data template, but it is hardcoded and any addition to it creates a risk to the functionality of the automation. The auto-formatting of the YAML code is also doing its part to frustrate me, and I don’t like the working solution below at all.

I have also considered whether I can and should extend the zone entities with attributes for prepositions and articles.
I am sure that the following automation can be optimized. And I am aware that in the meantime there are no data_templates at all.
Maybe you guys have some good tips for me on how to slightly improve the correct naming of the zones in my notifications.

- id: '1623768194152'
  alias: Zonenwechsel Benachrichtigung
  description: ''
  trigger:
  - platform: state
    entity_id: person.me,person.her,person.him
  condition:
  - condition: template
    value_template: '{{ trigger.to_state is not none and (trigger.from_state is none
      or trigger.to_state.state != trigger.from_state.state) }}'
  action:
  - service: notify.mobile_app_galaxy_note
    data_template:
      message: ->
        {% set name = trigger.to_state.name %}
        {% set enter_zone_map = {
              "home": "zu Hause",
              "not_home": "unterwegs",
              "altdorf": "in Altdorf",
              "arzt": "beim Arzt",
              "buro": "im Büro",
              "evi_fynn": "bei Evi und Fynn",
              "friseur_yasemin": "beim Frisör Yasemin",
              "gassi_wald": "im Gassi-Wald",
              .
              .
              .
              "verena": "bei Verena",
              "zim": "im ZIM",
              "zimmermannspark": "im Zimmermannspark"
              }
        %}
        {% set leave_zone_map = {
              "home": "das Haus",
              "not_home": "unterwegs", 
              "altdorf": "Altdorf",
              "arzt": "den Arzt",
              "buro_steffi": "das Büro",
              "evi_fynn": "Evi und Fynn",
              "friseur_yasemin": "den Frisör Yasemin",
              "gassi_wald": "den Gassi-Wald",
              .
              .
              .
              "verena": "Verena",
              "zim": "das ZIM",
              "zimmermannspark": "den Zimmermannspark"
              }
         %}
        {% set from = trigger.from_state.state if trigger.from_state.state is not none else "unknown" %}
        {% set from = leave_zone_map.get(from, from) %}
        {% set to  = trigger.to_state.state %}
        {% set to = enter_zone_map.get(to, to) %}
        {{ name }} {% if from != "unterwegs" %}hat {{ from }} verlassen{% endif %}
        {% if from != "unterwegs" and  to != "unterwegs" %} und {% endif %}
        {% if to != "unterwegs" %}ist {{ to }} angekommen{% endif %}.'
      data:
        tag: '{{ trigger.to_state.name }}'
        group: Location