Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Rank | Name | Nation | CP | FP | Points | Placings |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | Beatrix Schuba | Austria | 1 | 7 | 2763.0 | 10 |
| 2 | Julie Lynn Holmes | United States | 2 | 5 | 2697.3 | 24.5 |
| 3 | Karen Magnussen | Canada | 4 | 2 | 2697.7 | 27 |
| 4 | Janet Lynn | United States | 5 | 1 | 2680.0 | 34 |
| 5 | Rita Trapanese | Italy | 3 | 8 | 2623.6 | 47.5 |
| 6 | Sonja Morgenstern | East Germany | 9 | 3 | 2606.6 | 52 |
| 7 | Zsuzsa Almássy | Hungary | 6 | 4 | 2599.9 | 57 |
| 8 | Charlotte Walter | Switzerland | 8 | 14 | 2480.7 | 86 |
| 9 | Christine Errath | East Germany | 13 | 6 | 2493.5 | 83 |
| 10 | Suna Murray | United States | 14 | 9 | 2475.0 | 91 |
| 11 | Elena Alexandrova | Soviet Union | 10 | 13 | 2450.5 | 103 |
| 12 | Patricia Ann Dodd | United Kingdom | 7 | 16 |  | 100 |
| 13 | Kazumi Yamashita | Japan | 12 | 11 |  | 116 |
| 14 | Ludmila Bezáková | Czechoslovakia | 11 | 15 |  | 122 |
| 15 | Jean Scott | United Kingdom | 15 | 10 |  | 132 |
| 16 | Diane Hall | Canada | 19 | 12 |  | 132 |
| 17 | Anita Johansson | Sweden | 16 | 18 |  | 145 |
| 18 | Judith Bayer | West Germany | 20 | 17 |  | 159 |
| 19 | Ruth Hutchinson | Canada | 17 | 20 |  | 168 |
| 20 | Sonja Balun | Austria | 22 | 19 |  | 177 |
| 21 | Joëlle Cartaux | France | 18 | 22 |  | 188 |
| 22 | Cinzia Frosio | Italy | 21 | 21 |  | 197 |
Question:
how many women from the united states competed in the 1971 world figure skating championships?
Answer:
3