[source, ruby]
----
response = client.search(
  index: 'news',
  body: {
    query: {
      match: {
        content: 'Bird flu'
      }
    },
    aggregations: {
      my_sample: {
        sampler: {
          shard_size: 100
        },
        aggregations: {
          keywords: {
            significant_text: {
              field: 'content'
            }
          }
        }
      }
    }
  }
)
puts response
----
