atasets. </td>
  </tr>
  <tr>
   <td style="text-align:left;"> data-entry-1 </td>
   <td style="text-align:left;"> exercise </td>
   <td style="text-align:left;"> tibble(x = c(1,2,5), y = c("h", "m", "g"), z = c(0.08, 0.83, 0.60)) </td>
  </tr>
  <tr>
   <td style="text-align:left;"> data-entry-2 </td>
   <td style="text-align:left;"> exercise </td>
   <td style="text-align:left;"> tribble(~x, ~y, ~z, 
      1, "h", 0.08,
      2, "m", 0.83,
      5, "g", 0.60) </td>
  </tr>
  <tr>
   <td st