Your results are correct, but I don't agree with your description of these sentences. They're both in present perfect tense, but the participle used in the perfect tenses is the past participle.
The past participle is used in both the present perfect tense and the past perfect tense.
Yes I have written 'present participle sentence' instead of 'present perfect sentence' and also 'contains' instead of 'contain'. Thanks for correcting the mistakes.
Thanks very much for your precious time and help, Clive, Avangi