Clinical trials involve 240 patients in 10 centres with each patient questioned three times.
OPTIONS:
- yes
- no
Question: Clinical trials involve an average of 200 patients per trial.
no

Humic acids are complex organic molecules formed by the breakdown of organic matter in the soil. They are not considered to be fertilizers, but soil enhancers and improvers.
OPTIONS:
- yes
- no
Question: Organic fertilizers are used as soil enhancers.
no

The Christian Democrats (CDU) won 35.2% of the vote, or 225 seats, against 34.3% for Chancellor Gerhard Schroeder's Social Democrats (SPD).
OPTIONS:
- yes
- no
Question: It seems unlikely that there will be a coalition between Gerhard Schroeder's Social Democrats and Angela Merkel's Christian Democratic Union.
no