Artificial Language - General Questions

In an artificial language, 'morlo pina' means 'red apple', 'pina tasu' means 'apple pie' and 'tasu gelo' means 'pie crust'. Which word means 'red'?

'quen fala' means 'night train' and 'fala sito' means 'train station'. 'sito brem' means 'station master'. Which could be the word for 'night master'?

'sel ka tu' means 'sun is bright', 'tu mon sel' means 'bright and sun' and 'ka dri' means 'is hot'. Which word means 'hot'?