How similar are these two sentences, on a scale from 0-5 (0 is "not similar" and 5 is "very similar")?

hong kong universities collaborate with universities, businesses and government sectors of mainland china to coordinate training programs and research centers to promote high-tech research, commercialization, and technology transfer.
hong kong universities have collaborated with tertiary education, business and government sectors of mainland china to direct training programs and research centers to promote research commercialization and technology transfer.

Available choices: -0. -1. -2. -3. -4. -5.
5