This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.

[Q]: In addition to those actors who have headlined the series, others have portrayed versions of the Doctor in guest roles. Notably, in 2013, John Hurt guest-starred as a hitherto unknown incarnation of the Doctor known as the War Doctor in the run-up to the show's 50th anniversary special "The Day of the Doctor". He is shown in mini-episode "The Night of the Doctor" to have been retroactively inserted into the show's fictional chronology between McGann and Eccleston's Doctors, although his introduction was written so as not to disturb the established numerical naming of the Doctors. Another example is from the 1986 serial The Trial of a Time Lord, where Michael Jayston portrayed the Valeyard, who is described as an amalgamation of the darker sides of the Doctor's nature, somewhere between his twelfth and final incarnation.
[A]: Who played the War Doctor?


[Q]: Not all cells in a multicellular plant contain chloroplasts. All green parts of a plant contain chloroplasts—the chloroplasts, or more specifically, the chlorophyll in them are what make the photosynthetic parts of a plant green. The plant cells which contain chloroplasts are usually parenchyma cells, though chloroplasts can also be found in collenchyma tissue. A plant cell which contains chloroplasts is known as a chlorenchyma cell. A typical chlorenchyma cell of a land plant contains about 10 to 100 chloroplasts.
[A]: What parts of plants have chloroplasts?


[Q]: A 5th-century building in Huldah may be a Samaritan synagogue. Its mosaic floor contains typical Jewish symbols (menorah, lulav, etrog) but the inscriptions are Greek. Another Samaritan synagogue with a mosaic floor was located in Bet She'an (excavated in 1960). The floor had only decorative motifs and an aedicule (shrine) with cultic symbols. The ban on human or animal images was more strictly observed by the Samaritans than their Jewish neighbours in the same town (see above). The mosaic was laid by the same masters who made the floor of the Beit Alfa synagogue. One of the inscriptions was written in Samaritan script.
[A]:
A 5th-century building in Huldah is believed to be what?