First sentence: "Ernst Gombrich nació en 1909 en Viena, Austria, y estudió historia del arte en la Universidad de Viena." The terms here are "nació", "Vienna", "Austria", "estudió", "historia del arte", "Universidad de Viena". I need to find three synonyms or variants for each, keeping proper nouns like "Universidad de Viena" as is.
Wait, the user said proper nouns stay. Are there any proper nouns here? "Gombrich" is a proper noun. "La Historia del Arte" is the title, so that stays. The rest are common nouns.
I need to make sure to replace each of these terms with three synonyms or related words. Since it's in Spanish, I should be careful with the language. For example, "narrativa" could be narración. "Contexto cultural" might become ambientación sociocultural.
"El librotratado da comienzo con la prehistoria y la tiempos remotos, y hace progreso hasta el arte actual" Maria roswitha anal
Some parts might be tricky, like "enfoque más amplio y contextualizado". Here, "amplio" could have variants like integrador, and "contextualizado" might be inmerso. Then "continuidad y evolución" could be persistencia y desarrollo.
For "nació", possible variants could be "surgió|llegó al mundo|se originó". "Vienna" should stay as Viena, but maybe use "Viena" as the city. "Austria" is a country name, so maybe "Austria|República de Austria|Imperio Austriaco" but keep the original as main option. "Estudió" can be "se educó|aprendió|cursó estudios". "Historia del arte" might be "historia del arte|desarrollo artístico|evolución de las artes". "Universidad de Viena" is a proper noun, so it stays.
Check if all words are replaced except proper nouns. "Gombrich" stays, "La Historia del Arte" stays. First sentence: "Ernst Gombrich nació en 1909 en
Also, making sure that the alternatives are synonyms in Spanish. For example, "comienza" could be "inicia|empieza|da comienzo". "Avanza" as "progresa|avanza|hace progreso" – but the original word is "avanza", so maybe "progresa|progresa|marcha adelante". Hmm, "hace progreso" is a phrase, but "avanza" is the verb. Maybe better to use "progresa|adelanta|marcha adelante".
Continuing with "Una de las características más destacadas de "La Historia del Arte" es su enfoque en la narrativa."
Then next part: "Gombrich se enfoca en la descripción de las obras de arte más importantes de cada período, y analiza su significado y contexto." Are there any proper nouns here
"Gombrich concentra su atención a la caracterización de las obras de arte más importantes de cada tiempo, y examina su sentido y entorno".
Also, checking for any possible errors. For example, in the part about "contexto", the original is "contexto", but "contexto|entorno|haciendo caso" – "haciendo caso" is "taking into account" but not a synonym for context. Maybe "contexto|fondo|entorno".
After replacing all terms, I'll review the modified text to confirm that no terms were missed and that each substitution makes sense in the new context. Finally, present the output as the user requested, using only the altered text with the variations in brackets.