Answer the question from the given passage. Your answer should be directly extracted from the passage, and it should be a single entity, name, or number, not a sentence.
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Question: Passage: Endosymbiotic gene transfer is how we know about the lost chloroplasts in many chromalveolate lineages. Even if a chloroplast is eventually lost, the genes it donated to the former host's nucleus persist, providing evidence for the lost chloroplast's existence. For example, while diatoms (a heterokontophyte) now have a red algal derived chloroplast, the presence of many green algal genes in the diatom nucleus provide evidence that the diatom ancestor (probably the ancestor of all chromalveolates too) had a green algal derived chloroplast at some point, which was subsequently replaced by the red chloroplast. Question: What shows us lost chloroplasts?

Answer: Endosymbiotic gene transfer


Question: Passage: In the laboratory, stratigraphers analyze samples of stratigraphic sections that can be returned from the field, such as those from drill cores. Stratigraphers also analyze data from geophysical surveys that show the locations of stratigraphic units in the subsurface. Geophysical data and well logs can be combined to produce a better view of the subsurface, and stratigraphers often use computer programs to do this in three dimensions. Stratigraphers can then use these data to reconstruct ancient processes occurring on the surface of the Earth, interpret past environments, and locate areas for water, coal, and hydrocarbon extraction. Question: What type of surveys show the location of stratigraphic units in the subsurface?

Answer: geophysical


Question: Passage: Nearby, in Ogród Saski (the Saxon Garden), the Summer Theatre was in operation from 1870 to 1939, and in the inter-war period, the theatre complex also included Momus, Warsaw's first literary cabaret, and Leon Schiller's musical theatre Melodram. The Wojciech Bogusławski Theatre (1922–26), was the best example of 'Polish monumental theatre'. From the mid-1930s, the Great Theatre building housed the Upati Institute of Dramatic Arts – the first state-run academy of dramatic art, with an acting department and a stage directing department. Question: What is the Saxon Garden in Polish?

Answer:
Ogród Saski