query PrsAndParticipants($query_string: String!, $after_cursor: String) {
  search(query: $query_string, type: ISSUE, last: 100, after: $after_cursor) {
    pageInfo {
      hasNextPage
      endCursor
    }
    edges {
      node {
        __typename
        ... on PullRequest {
          number
          author {
            __typename
            ... on User {
              login
            }
          }
          mergedBy {
            __typename
            ... on User {
              login
            }
          }
          reviews(first: 100) {
            totalCount
            nodes {
              author {
                __typename
                ... on User {
                  login
                }
              }
            }
          }
          participants(first: 100) {
            totalCount
            edges {
              node {
                login
              }
            }
          }
        }
      }
    }
  }
}