#defaultView:BarChart
select ?year ?number_of_pages ?work_label where {
  {
    select ?year (sample(?pages) as ?number_of_pages) ?work_label where {
      {
        select (str(?year_) as ?year) (0 as ?pages) ("_" as ?work_label) where {
          ?year_item wdt:P31 wd:Q577 . 
          ?year_item wdt:P585 ?date .
          bind(year(?date) as ?year_)
          {
            select (min(?year_) as ?earliest_year) (max(?year_) as ?latest_year) where {
              ?work wdt:P50 wd:Q4693015 .
              ?work wdt:P577 ?publication_date . 
              bind(year(?publication_date) as ?year_)
            }
          }
          filter (?year_ >= ?earliest_year && ?year_ <= ?latest_year)
        }
      }
      union {
        ?work wdt:P50 wd:Q4693015 .
        ?work wdt:P1104 ?pages .
        ?work wdt:P577 ?date . 
        ?work rdfs:label ?long_work_label . filter(lang(?long_work_label) = 'en')
        bind(substr(?long_work_label, 1, 20) as ?work_label)
        bind(str(year(?date)) as ?year) 
      }
	} 
	group by ?year ?work ?work_label
	order by ?year 
  }
}

ASK {
  {
    select ?year (sample(?pages) as ?number_of_pages) ?work_label where {
      {
        select (str(?year_) as ?year) (0 as ?pages) ("_" as ?work_label) where {
          ?year_item wdt:P31 wd:Q577 . 
          ?year_item wdt:P585 ?date .
          bind(year(?date) as ?year_)
          {
            select (min(?year_) as ?earliest_year) (max(?year_) as ?latest_year) where {
              ?work wdt:P50 wd:Q4693015 .
              ?work wdt:P577 ?publication_date . 
              bind(year(?publication_date) as ?year_)
            }
          }
          filter (?year_ >= ?earliest_year && ?year_ <= ?latest_year)
        }
      }
      union {
        ?work wdt:P50 wd:Q4693015 .
        ?work wdt:P1104 ?pages .
        ?work wdt:P577 ?date . 
        ?work rdfs:label ?long_work_label . filter(lang(?long_work_label) = 'en')
        bind(substr(?long_work_label, 1, 20) as ?work_label)
        bind(str(year(?date)) as ?year) 
      }
	} 
	group by ?year ?work ?work_label
	order by ?year 
  }
}